]> matita.cs.unibo.it Git - helm.git/blobdiff - helm/www/lambdadelta/basic_2.html
- milestone update in basic_2 (basic_2a released)
[helm.git] / helm / www / lambdadelta / basic_2.html
index 332935d9a7b08cd9bc04c72a0d07ad4c1a86c67f..e3665cc8edb2f2f54d976049b1316781e65d9140 100644 (file)
@@ -6,8 +6,8 @@
     <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
     <meta http-equiv="Content-Style-Type" content="text/css" />
     <meta name="author" content="Ferruccio Guidi" />
-    <meta name="description" content="lambdadelta version 2" />
-    <title>lambdadelta version 2</title>
+    <meta name="description" content="\lambda\delta home page" />
+    <title>\lambda\delta home page</title>
     <link rel="stylesheet" type="text/css" href="http://lambdadelta.info/css/ld_web.css" />
     <link rel="stylesheet" type="text/css" href="http://lambdadelta.info/css/lddl.css" />
     <link rel="stylesheet" type="text/css" href="http://lambdadelta.info/css/xhtbl.css" />
         <img class="icon32" alt="[lambdadelta home]" title="lambdadelta home" src="http://lambdadelta.info/images/crux_32.png" />
       </a>
     </div>
-    <div class="head1">cic:/matita/lambdadelta/basic_2/ (λδ version 2)</div>
+    <div class="head1">cic:/matita/lambdadelta/basic_2/ (core λδ version 2)</div>
     <div class="spacer">
       <img class="rule" alt="[Spacer]" title="lambdadelta rainbow rule" src="http://lambdadelta.info/images/rainbow.png" />
     </div>
-   <div xmlns:ld="http://lambdadelta.info/" class="head2">System's Syntax and Behavior</div>
-   <div xmlns:ld="http://lambdadelta.info/" class="text">This is a summary of the "block structure"
-         of the System's syntactic items and reductions.
-   </div>
-   <div xmlns:ld="http://lambdadelta.info/" class="text">
+   <div xmlns:ld="http://lambdadelta.info/" class="spacer">
+      <br />
+    </div>
+    <div xmlns:ld="http://lambdadelta.info/" class="text">
       <table cellpadding="4" cellspacing="0">
         <tbody>
           <tr>
-            <td class="snns text grey">domain</td>
-            <td class="snns plane grey">block</td>
-            <td class="snns text grey">leader</td>
-            <td class="snns text grey">applicator (with →θ)*</td>
-            <td class="snns text grey">reduction</td>
-            <td class="snns text grey">→ζ *</td>
-            <td class="ssns text grey">reference *</td>
-          </tr>
-          <tr>
-            <td class="snns text">{X | Γ ⊢ X : W}</td>
-            <td class="snns plane wine">local typed abstraction *</td>
-            <td class="snns text wine">Γ ⊢ +λW</td>
-            <td class="snns text wine">ⓐV</td>
-            <td class="snns text wine">→β</td>
-            <td class="snns text wine">no</td>
-            <td class="ssns text wine">#i</td>
-          </tr>
-          <tr>
-            <td class="nnns text">
-              <br />
+            <td class="snns capitalize italic sky">
+              <a href="http://lambdadelta.info/index.html">home</a>
             </td>
-            <td class="snns plane magenta">local typed declaration **</td>
-            <td class="snns text magenta">Γ ⊢ -λW</td>
-            <td class="snns text magenta">ⓐV</td>
-            <td class="snns text magenta">→β</td>
-            <td class="snns text magenta">no</td>
-            <td class="ssns text magenta">#i</td>
-          </tr>
-          <tr>
-            <td class="nnns text">
-              <br />
+            <td class="snns capitalize italic magenta">
+              <a href="http://lambdadelta.info/news.html">news</a>
             </td>
-            <td class="snns plane prune">global typed declaration ***</td>
-            <td class="snns text prune">Γ ⊢ pλW</td>
-            <td class="snns text prune">no</td>
-            <td class="snns text prune">no</td>
-            <td class="snns text prune">no</td>
-            <td class="ssns text prune">$p</td>
-          </tr>
-          <tr>
-            <td class="nnns text">
+            <td class="snns capitalize italic orange">
+              <a href="http://lambdadelta.info/documentation.html">documentation</a>
+            </td>
+            <td class="snns capitalize italic green">
+              <a href="http://lambdadelta.info/specification.html">specification</a>
+            </td>
+            <td class="snnn capitalize italic green">
               <br />
             </td>
-            <td class="snns plane blue">native type annotation *</td>
-            <td class="snns text blue">Γ ⊢ ⓝW</td>
-            <td class="snns text blue">no</td>
-            <td class="snns text blue">no</td>
-            <td class="snns text blue">yes</td>
-            <td class="ssns text blue">no</td>
-          </tr>
-          <tr>
-            <td class="snns text">{X | Γ ⊢ X = V}</td>
-            <td class="snns plane sky">local abbreviation *</td>
-            <td class="snns text sky">Γ ⊢ +δV</td>
-            <td class="snns text sky">no</td>
-            <td class="snns text sky">local →δ</td>
-            <td class="snns text sky">yes</td>
-            <td class="ssns text sky">#i</td>
+            <td class="ssns capitalize italic green">
+              <a href="http://lambdadelta.info/implementation.html">implementation</a>
+            </td>
           </tr>
           <tr>
-            <td class="nnns text">
-              <br />
+            <td class="snns capitalize sky">
+              <a href="http://lambdadelta.info/index.html#foreword">foreword</a>
+            </td>
+            <td class="snns capitalize magenta">
+              <a href="http://lambdadelta.info/news.html#milestones">milestones</a>
+            </td>
+            <td class="snns capitalize orange">
+              <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
+            </td>
+            <td class="snns capitalize green">
+              <a href="http://lambdadelta.info/specification.html#v2">version 2</a>
+            </td>
+            <td class="snnn capitalize green">(<a href="http://lambdadelta.info/ground_2.html">background</a> - <a href="http://lambdadelta.info/basic_2.html">core</a> - <a href="http://lambdadelta.info/apps_2.html">applications</a>)</td>
+            <td class="ssns capitalize green">
+              <a href="http://lambdadelta.info/implementation.html#lddl">library</a>
             </td>
-            <td class="snns plane cyan">local definition **</td>
-            <td class="snns text cyan">Γ ⊢ -δV</td>
-            <td class="snns text cyan">no</td>
-            <td class="snns text cyan">local →δ</td>
-            <td class="snns text cyan">no</td>
-            <td class="ssns text cyan">#i</td>
           </tr>
           <tr>
-            <td class="nnns text">
+            <td class="snss capitalize sky">
+              <a href="http://lambdadelta.info/index.html#citations">citations</a>
+            </td>
+            <td class="snss capitalize magenta">
+              <a href="http://lambdadelta.info/news.html#visibility">visibility</a>
+            </td>
+            <td class="snss capitalize orange">
+              <a href="http://lambdadelta.info/documentation.html#v1">version 1</a>
+            </td>
+            <td class="snss capitalize green">
+              <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
+            </td>
+            <td class="snsn capitalize green">
               <br />
             </td>
-            <td class="snns plane water">global definition ***</td>
-            <td class="snns text water">Γ ⊢ pδV</td>
-            <td class="snns text water">no</td>
-            <td class="snns text water">global →δ</td>
-            <td class="snns text water">no</td>
-            <td class="ssns text water">$p</td>
-          </tr>
-          <tr>
-            <td class="snss text">no</td>
-            <td class="snss plane green">sort ****</td>
-            <td class="snss text green">Γ ⊢ ⋆k</td>
-            <td class="snss text green">no</td>
-            <td class="snss text green">no</td>
-            <td class="snss text green">no</td>
-            <td class="ssss text green">no</td>
+            <td class="ssss capitalize green">
+              <a href="http://lambdadelta.info/implementation.html#helena">helena</a>
+            </td>
           </tr>
         </tbody>
       </table>
     </div>
-   <div xmlns:ld="http://lambdadelta.info/" class="text">* In terms only.
-         ** In terms and local environments only.
-         *** In global environments only.
-         **** Sort level k in terms only.
-   </div>
 
-   <div xmlns:ld="http://lambdadelta.info/" class="head2">Summary of the Specification</div>
+
+   <div xmlns:ld="http://lambdadelta.info/" class="head2dx" id="summary">Summary of the Specification <img class="icon37" alt="[spacer]" title="lambdadelta butterfly" src="http://lambdadelta.info/images/b4.png" />
+    </div>
    <div xmlns:ld="http://lambdadelta.info/" class="text">Here is a numerical acount of the specification's contents
          and its timeline.
    </div>
       <table cellpadding="4" cellspacing="0">
         <tbody>
           <tr>
-            <td class="snns component grey">category</td>
-            <td class="snns plane grey">objects</td>
-            <td class="snnn number grey">
+            <td class="snns capitalize italic gray">category</td>
+            <td class="snns italic gray">objects</td>
+            <td class="snnn right italic gray">
               <br />
             </td>
-            <td class="snnn plane grey">
+            <td class="snnn italic gray">
               <br />
             </td>
-            <td class="snnn number grey">
+            <td class="snnn right italic gray">
               <br />
             </td>
-            <td class="snnn plane grey">
+            <td class="snnn italic gray">
               <br />
             </td>
-            <td class="ssnn number grey">
+            <td class="ssnn right italic gray">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="snns component cyan">sizes</td>
-            <td class="snns plane cyan">files</td>
-            <td class="snnn number cyan">250  </td>
-            <td class="snns plane cyan">characters</td>
-            <td class="snnn number cyan">484808</td>
-            <td class="snns plane cyan">nodes</td>
-            <td class="ssnn number cyan">1304888</td>
+            <td class="snns capitalize italic cyan">sizes</td>
+            <td class="snns italic cyan">files</td>
+            <td class="snnn right italic cyan">360</td>
+            <td class="snns italic cyan">characters</td>
+            <td class="snnn right italic cyan">433402</td>
+            <td class="snns italic cyan">nodes</td>
+            <td class="ssnn right italic cyan">1874774</td>
           </tr>
           <tr>
-            <td class="snns component green">propositions</td>
-            <td class="snns plane green">theorems</td>
-            <td class="snnn number green">84</td>
-            <td class="snns plane green">lemmas</td>
-            <td class="snnn number green">1112</td>
-            <td class="snns plane green">total</td>
-            <td class="ssnn number green">1196</td>
+            <td class="snns capitalize italic green">propositions</td>
+            <td class="snns italic green">theorems</td>
+            <td class="snnn right italic green">130</td>
+            <td class="snns italic green">lemmas</td>
+            <td class="snnn right italic green">1286</td>
+            <td class="snns italic green">total</td>
+            <td class="ssnn right italic green">1416</td>
           </tr>
           <tr>
-            <td class="snss component yellow">concepts</td>
-            <td class="snss plane yellow">declared</td>
-            <td class="snsn number yellow">45</td>
-            <td class="snss plane yellow">defined</td>
-            <td class="snsn number yellow">83</td>
-            <td class="snss plane yellow">total</td>
-            <td class="sssn number yellow">128</td>
+            <td class="snss capitalize italic yellow">concepts</td>
+            <td class="snss italic yellow">declared</td>
+            <td class="snsn right italic yellow">54</td>
+            <td class="snss italic yellow">defined</td>
+            <td class="snsn right italic yellow">89</td>
+            <td class="snss italic yellow">total</td>
+            <td class="sssn right italic yellow">143</td>
           </tr>
         </tbody>
       </table>
     </div>
+
+   <div xmlns:ld="http://lambdadelta.info/" class="head3sn" id="B">Stage "B"</div>
    <ul xmlns:ld="http://lambdadelta.info/">
       <li>
-        <span class="date">In progress.</span>
+        <span class="emph alpha">Ongoing.</span>
          Context-sensitive subject equivalence
          for native type assignment.
    </li>
     </ul>
+
+   <div xmlns:ld="http://lambdadelta.info/" class="head3sn" id="A">Stage "A": "Extending the Applicability Condition"</div>
+   <ul xmlns:ld="http://lambdadelta.info/">
+      <li>
+        <span class="emph gamma">2014 October 28.</span>
+         λδ version 2A is released.
+   </li>
+    </ul>
+   <ul xmlns:ld="http://lambdadelta.info/">
+      <li>
+        <span class="emph beta">2014 September 9.</span>
+         Iterated static type assignment defined (more elegantly)
+         as a primitive notion.
+   </li>
+    </ul>
+   <ul xmlns:ld="http://lambdadelta.info/">
+      <li>
+        <span class="emph beta">2014 June 18.</span>
+         Preservation of stratified native validity
+         for context-sensitive computation on terms.
+   </li>
+    </ul>
+   <ul xmlns:ld="http://lambdadelta.info/">
+      <li>
+        <span class="emph alpha">2014 June 9.</span>
+         Strong qrst-normalization
+         for simply typed terms.
+   </li>
+    </ul>
+   <ul xmlns:ld="http://lambdadelta.info/">
+      <li>
+        <span class="emph alpha">2014 April 16.</span>
+         Lazy equivalence on local environments
+        addded as q-step to rst-computation on closures
+         (anniversary milestone).
+   </li>
+    </ul>
+   <ul xmlns:ld="http://lambdadelta.info/">
+      <li>
+        <span class="emph alpha">2014 January 20.</span>
+         Parametrized slicing of local environments
+        comprises both versions of this operation
+        (one from basic_1, the other used in basic_2 till now).
+   </li>
+    </ul>
+   <ul xmlns:ld="http://lambdadelta.info/">
+      <li>
+        <span class="emph alpha">2013 August 7.</span>
+         Passive support for global environments.
+   </li>
+    </ul>
    <ul xmlns:ld="http://lambdadelta.info/">
       <li>
-        <span class="date">In progress.</span>
-         Closure of extended context-sensitive computation
-         for native validity.
+        <span class="emph alpha">2013 July 27.</span>
+         Reaxiomatized β-reductum as in rt-reduction.
    </li>
     </ul>
    <ul xmlns:ld="http://lambdadelta.info/">
       <li>
-        <span class="date">In progress.</span>
-         Extended context-sensitive strong normalization
+        <span class="emph alpha">2013 July 20.</span>
+         Context-sensitive strong rt-normalization
          for simply typed terms.
    </li>
     </ul>
    <ul xmlns:ld="http://lambdadelta.info/">
       <li>
-        <span class="date">2013 March 16.</span>
+        <span class="emph alpha">2013 April 16.</span>
+         Reaxiomatized substitution and reduction
+         commute with respect to subclosure
+         (anniversary milestone).
+   </li>
+    </ul>
+   <ul xmlns:ld="http://lambdadelta.info/">
+      <li>
+        <span class="emph alpha">2013 March 16.</span>
          Mutual recursive preservation of stratified native validity
-        for hyper computation on closures.
+         for rst-computation on closures.
    </li>
     </ul>
    <ul xmlns:ld="http://lambdadelta.info/">
       <li>
-        <span class="date">2012 October 16.</span>
+        <span class="emph alpha">2012 October 16.</span>
          Confluence for context-free parallel reduction on closures.
    </li>
     </ul>
    <ul xmlns:ld="http://lambdadelta.info/">
       <li>
-        <span class="date">2012 July 26.</span>
-         Term binders polarized to control ζ reduction.
+        <span class="emph alpha">2012 July 26.</span>
+         Term binders polarized to control ζ-reduction (not released).
    </li>
     </ul>
    <ul xmlns:ld="http://lambdadelta.info/">
       <li>
-        <span class="date">2012 April 16.</span>
+        <span class="emph alpha">2012 April 16.</span>
          Context-sensitive subject equivalence
          for atomic arity assignment
          (anniversary milestone).
     </ul>
    <ul xmlns:ld="http://lambdadelta.info/">
       <li>
-        <span class="date">2012 March 15.</span>
+        <span class="emph alpha">2012 March 15.</span>
          Context-sensitive strong normalization
          for simply typed terms.
    </li>
     </ul>
    <ul xmlns:ld="http://lambdadelta.info/">
       <li>
-        <span class="date">2012 January 27.</span>
+        <span class="emph alpha">2012 January 27.</span>
          Support for abstract candidates of reducibility.
    </li>
     </ul>
    <ul xmlns:ld="http://lambdadelta.info/">
       <li>
-        <span class="date">2011 September 21.</span>
+        <span class="emph alpha">2011 September 21.</span>
          Confluence for context-sensitive parallel reduction on terms.
    </li>
     </ul>
    <ul xmlns:ld="http://lambdadelta.info/">
       <li>
-        <span class="date">2011 September 6.</span>
+        <span class="emph alpha">2011 September 6.</span>
          Confluence for context-free parallel reduction on terms.
    </li>
     </ul>
    <ul xmlns:ld="http://lambdadelta.info/">
       <li>
-        <span class="date">2011 April 17.</span>
+        <span class="emph alpha">2011 April 17.</span>
          Specification starts.
    </li>
     </ul>
 
-   <div xmlns:ld="http://lambdadelta.info/" class="head2">Logical Structure of the Specification</div>
-   <div xmlns:ld="http://lambdadelta.info/" class="text">The source files are grouped in planes and components
-         according to the following table.
-         A notation file covering the whole specification is provided.
-         The notation for the relations or functions introduced in each file
-         is shown in parentheses (? are placeholders).
+   <div xmlns:ld="http://lambdadelta.info/" class="head2dx" id="structure">Logical Structure of the Specification <img class="icon37" alt="[spacer]" title="lambdadelta butterfly" src="http://lambdadelta.info/images/b4.png" />
+    </div>
+   <div xmlns:ld="http://lambdadelta.info/" class="text">This table reports the specification's components and their planes.
    </div>
    <div xmlns:ld="http://lambdadelta.info/" class="text">
       <table cellpadding="4" cellspacing="0">
         <tbody>
           <tr>
-            <td class="snns component grey">component</td>
-            <td class="snns plane grey">plane</td>
-            <td class="snns file grey">files</td>
-            <td class="snnn file grey">
-              <br />
-            </td>
-            <td class="snnn file grey">
+            <td class="snns top capitalize italic gray">component</td>
+            <td class="snns top italic gray">plane</td>
+            <td class="snns top gray">files</td>
+            <td class="snnn top gray">
               <br />
             </td>
-            <td class="snnn file grey">
+            <td class="snnn top gray">
               <br />
             </td>
-            <td class="ssnn file grey">
+            <td class="ssnn top gray">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="snns component prune">dynamic typing</td>
-            <td class="snns plane prune">"big tree" parallel computation</td>
-            <td class="snns file prune">yprs ( ? ⊢ ⦃?,?⦄ ≥[g] ⦃?,?⦄ )</td>
-            <td class="snnn file prune">yprs_yprs</td>
-            <td class="snnn file prune">ygt ( ? ⊢ ⦃?,?⦄ &gt;[g] ⦃?,?⦄ )</td>
-            <td class="snnn file prune">ygt_ygt</td>
-            <td class="ssnn file prune">
+            <td class="snns top capitalize italic wine">examples</td>
+            <td class="snns top italic wine">terms with special features</td>
+            <td class="snns top wine">ex_sta_ldec ex_cpr_omega ex_fpbg_refl ex_snv_eta</td>
+            <td class="snnn top wine">
+              <br />
+            </td>
+            <td class="snnn top wine">
+              <br />
+            </td>
+            <td class="ssnn top wine">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component prune">
+            <td class="snns top capitalize italic magenta" />
+            <td class="snns top italic magenta" />
+            <td class="snns top magenta" />
+            <td class="snnn top magenta">
+              <br />
+            </td>
+            <td class="snnn top magenta">
               <br />
             </td>
-            <td class="snns plane prune">"big tree" parallel reduction</td>
-            <td class="snns file prune">ypr ( ? ⊢ ⦃?,?⦄ ≽[g] ⦃?,?⦄ )</td>
-            <td class="snnn file prune">ysc ( ? ⊢ ⦃?,?⦄ ≻[g] ⦃?,?⦄ )</td>
-            <td class="snnn file prune">
+            <td class="ssnn top magenta">
               <br />
             </td>
-            <td class="snnn file prune">
+          </tr>
+          <tr>
+            <td class="snns top capitalize italic prune">dynamic typing</td>
+            <td class="snns top italic prune">local env. ref. for stratified native validity</td>
+            <td class="snns top prune">lsubsv ( ? ⊢ ? ⫃¡[?,?] ? )</td>
+            <td class="snnn top prune">lsubsv_lsuba lsubsv_lsubd lsubsv_lstas lsubsv_scpds lsubsv_cpcs lsubsv_snv</td>
+            <td class="snnn top prune">
               <br />
             </td>
-            <td class="ssnn file prune">
+            <td class="ssnn top prune">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component prune">
+            <td class="nnns top capitalize italic prune">
               <br />
             </td>
-            <td class="snns plane prune">local env. ref. for stratified native validity</td>
-            <td class="snns file prune">lsubsv ( ? ⊢ ? ¡⊑[?] ? )</td>
-            <td class="snnn file prune">lsubsv_ldrop lsubsv_lsuba lsubsv_ssta lsubsv_dxprs lsubsv_cpcs lsubsv_snv</td>
-            <td class="snnn file prune">
+            <td class="snns top italic prune">stratified native validity</td>
+            <td class="snns top prune">shnv ( ⦃?,?⦄ ⊢ ? ¡[?,?,?] )</td>
+            <td class="snnn top prune">
               <br />
             </td>
-            <td class="snnn file prune">
+            <td class="snnn top prune">
               <br />
             </td>
-            <td class="ssnn file prune">
+            <td class="ssnn top prune">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component prune">
+            <td class="nnns top capitalize italic prune">
               <br />
             </td>
-            <td class="snns plane prune">stratified native validity</td>
-            <td class="snns file prune">snv ( ⦃?,?⦄ ⊢ ? ¡[?] )</td>
-            <td class="snnn file prune">snv_lift snv_ltpss_dx snv_ltpss_sn snv_aaa snv_ssta snv_sstas snv_ssta_ltpr snv_ltpr snv_cpcs</td>
-            <td class="snnn file prune">
+            <td class="nnns top italic prune">
               <br />
             </td>
-            <td class="snnn file prune">
+            <td class="snns top prune">snv ( ⦃?,?⦄ ⊢ ? ¡[?,?] )</td>
+            <td class="snnn top prune">snv_lift snv_aaa snv_da_lpr snv_lstas snv_lstas_lpr snv_lpr snv_fsb snv_scpes snv_preserve</td>
+            <td class="snnn top prune">
               <br />
             </td>
-            <td class="ssnn file prune">
+            <td class="ssnn top prune">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="snns component blue">equivalence</td>
-            <td class="snns plane blue">focalized equivalence</td>
-            <td class="snns file blue">lfpcs ( ⦃?⦄ ⬌* ⦃?⦄ )</td>
-            <td class="snnn file blue">lfpcs_aaa lfpcs_fpcs lfpcs_lfprs lfpcs_lfpcs</td>
-            <td class="snnn file blue">
+            <td class="snns top capitalize italic blue">equivalence</td>
+            <td class="snns top italic blue">decomposed rt-equivalence</td>
+            <td class="snns top blue">scpes ( ⦃?,?⦄ ⊢ ? •*⬌*[?,?,?,?] ? )</td>
+            <td class="snnn top blue">scpes_aaa scpes_cpcs scpes_scpes</td>
+            <td class="snnn top blue">
               <br />
             </td>
-            <td class="snnn file blue">
-              <br />
-            </td>
-            <td class="ssnn file blue">
+            <td class="ssnn top blue">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component blue">
+            <td class="nnns top capitalize italic blue">
               <br />
             </td>
-            <td class="nnns plane blue">
+            <td class="snns top italic blue">context-sensitive equivalence</td>
+            <td class="snns top blue">cpcs ( ⦃?,?⦄ ⊢ ? ⬌* ? )</td>
+            <td class="snnn top blue">cpcs_aaa cpcs_cprs cpcs_cpcs</td>
+            <td class="snnn top blue">
               <br />
             </td>
-            <td class="snns file blue">fpcs ( ⦃?,?⦄ ⬌* ⦃?,?⦄ )</td>
-            <td class="snnn file blue">fpcs_aaa fpcs_cpcs fpcs_fprs fpcs_fpcs</td>
-            <td class="snnn file blue">
+            <td class="ssnn top blue">
               <br />
             </td>
-            <td class="snnn file blue">
+          </tr>
+          <tr>
+            <td class="snns top capitalize italic sky">conversion</td>
+            <td class="snns top italic sky">context-sensitive conversion</td>
+            <td class="snns top sky">cpc ( ⦃?,?⦄ ⊢ ? ⬌ ? )</td>
+            <td class="snnn top sky">cpc_cpc</td>
+            <td class="snnn top sky">
               <br />
             </td>
-            <td class="ssnn file blue">
+            <td class="ssnn top sky">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component blue">
+            <td class="snns top capitalize italic cyan">computation</td>
+            <td class="snns top italic cyan">evaluation for context-sensitive rt-reduction</td>
+            <td class="snns top cyan">cpxe ( ⦃?,?⦄ ⊢ ➡*[?,?] 𝐍⦃?⦄ )</td>
+            <td class="snnn top cyan">
               <br />
             </td>
-            <td class="snns plane blue">local env. ref. for stratified static type assignment</td>
-            <td class="snns file blue">lsubss ( ? •⊑[?] ? )</td>
-            <td class="snnn file blue">lsubss_ldrop lsubss_ssta lsubss_cpcs</td>
-            <td class="snnn file blue">
+            <td class="snnn top cyan">
               <br />
             </td>
-            <td class="snnn file blue">
-              <br />
-            </td>
-            <td class="ssnn file blue">
+            <td class="ssnn top cyan">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component blue">
+            <td class="nnns top capitalize italic cyan">
               <br />
             </td>
-            <td class="snns plane blue">context-sensitive equivalence</td>
-            <td class="snns file blue">cpcs ( ? ⊢ ? ⬌* ? )</td>
-            <td class="snnn file blue">cpcs_ltpss_dx cpcs_ltpss_sn cpcs_delift cpcs_aaa cpcs_ltpr cpcs_cprs cpcs_cpcs</td>
-            <td class="snnn file blue">
+            <td class="snns top italic cyan">evaluation for context-sensitive reduction</td>
+            <td class="snns top cyan">cpre ( ⦃?,?⦄ ⊢ ➡* 𝐍⦃?⦄ )</td>
+            <td class="snnn top cyan">cpre_cpre</td>
+            <td class="snnn top cyan">
               <br />
             </td>
-            <td class="snnn file blue">
-              <br />
-            </td>
-            <td class="ssnn file blue">
+            <td class="ssnn top cyan">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="snns component sky">conversion</td>
-            <td class="snns plane sky">focalized conversion</td>
-            <td class="snns file sky">lfpc ( ⦃?⦄ ⬌ ⦃?⦄ )</td>
-            <td class="snnn file sky">lfpc_lfpc</td>
-            <td class="snnn file sky">
-              <br />
-            </td>
-            <td class="snnn file sky">
+            <td class="nnns top capitalize italic cyan">
               <br />
             </td>
-            <td class="ssnn file sky">
+            <td class="snns top italic cyan">strongly normalizing qrst-computation</td>
+            <td class="snns top cyan">fsb ( ⦥[?,?] ⦃?,?,?⦄ )</td>
+            <td class="snnn top cyan">fsb_alt ( ⦥⦥[?,?] ⦃?,?,?⦄ )</td>
+            <td class="snnn top cyan">fsb_aaa fsb_csx</td>
+            <td class="ssnn top cyan">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component sky">
+            <td class="nnns top capitalize italic cyan">
               <br />
             </td>
-            <td class="nnns plane sky">
+            <td class="snns top italic cyan">strongly normalizing rt-computation</td>
+            <td class="snns top cyan">lcosx ( ? ⊢ ~⬊*[?,?,?] ? )</td>
+            <td class="snnn top cyan">lcosx_cpx</td>
+            <td class="snnn top cyan">
               <br />
             </td>
-            <td class="snns file sky">fpc ( ⦃?,?⦄ ⬌ ⦃?,?⦄ )</td>
-            <td class="snnn file sky">fpc_fpc</td>
-            <td class="snnn file sky">
+            <td class="ssnn top cyan">
               <br />
             </td>
-            <td class="snnn file sky">
+          </tr>
+          <tr>
+            <td class="nnns top capitalize italic cyan">
               <br />
             </td>
-            <td class="ssnn file sky">
+            <td class="nnns top italic cyan">
+              <br />
+            </td>
+            <td class="snns top cyan">lsx ( ? ⊢ ⬊*[?,?,?,?] ? )</td>
+            <td class="snnn top cyan">lsx_alt ( ? ⊢ ⬊⬊*[?,?,?,?] ? )</td>
+            <td class="snnn top cyan">lsx_drop lsx_lpx lsx_lpxs llsx_csx</td>
+            <td class="ssnn top cyan">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component sky">
+            <td class="nnns top capitalize italic cyan">
               <br />
             </td>
-            <td class="snns plane sky">context-sensitive conversion</td>
-            <td class="snns file sky">cpc ( ? ⊢ ? ⬌ ? )</td>
-            <td class="snnn file sky">cpc_cpc</td>
-            <td class="snnn file sky">
+            <td class="nnns top italic cyan">
               <br />
             </td>
-            <td class="snnn file sky">
+            <td class="snns top cyan">csx_vector ( ⦃?,?⦄ ⊢ ⬊*[?,?] ? )</td>
+            <td class="snnn top cyan">csx_tsts_vector csx_aaa</td>
+            <td class="snnn top cyan">
               <br />
             </td>
-            <td class="ssnn file sky">
+            <td class="ssnn top cyan">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="snns component cyan">computation</td>
-            <td class="snns plane cyan">focalized computation</td>
-            <td class="snns file cyan">lfprs ( ⦃?⦄ ➡* ⦃?⦄ )</td>
-            <td class="snnn file cyan">lfprs_aaa lfprs_ltprs lfprs_cprs lfprs_fprs lfprs_lfprs</td>
-            <td class="snnn file cyan">
+            <td class="nnns top capitalize italic cyan">
               <br />
             </td>
-            <td class="snnn file cyan">
+            <td class="nnns top italic cyan">
               <br />
             </td>
-            <td class="ssnn file cyan">
+            <td class="snns top cyan">csx ( ⦃?,?⦄ ⊢ ⬊*[?,?] ? )</td>
+            <td class="snnn top cyan">csx_alt ( ⦃?,?⦄ ⊢ ⬊⬊*[?,?] ? )</td>
+            <td class="snnn top cyan">csx_lift csx_lleq csx_lpx csx_lpxs csx_fpbs</td>
+            <td class="ssnn top cyan">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component cyan">
+            <td class="nnns top capitalize italic cyan">
               <br />
             </td>
-            <td class="nnns plane cyan">
+            <td class="snns top italic cyan">parallel qrst-computation</td>
+            <td class="snns top cyan">fpbg ( ⦃?,?,?⦄ &gt;≡[?,?] ⦃?,?,?⦄ )</td>
+            <td class="snnn top cyan">fpbg_lift fpbg_fleq fpbg_fpbs fpbg_fpbg</td>
+            <td class="snnn top cyan">
               <br />
             </td>
-            <td class="snns file cyan">fprs ( ⦃?,?⦄ ➡* ⦃?,?⦄ )</td>
-            <td class="snnn file cyan">fprs_aaa fprs_fprs</td>
-            <td class="snnn file cyan">
+            <td class="ssnn top cyan">
               <br />
             </td>
-            <td class="snnn file cyan">
+          </tr>
+          <tr>
+            <td class="nnns top capitalize italic cyan">
               <br />
             </td>
-            <td class="ssnn file cyan">
+            <td class="nnns top italic cyan">
               <br />
             </td>
-          </tr>
-          <tr>
-            <td class="nnns component cyan">
+            <td class="snns top cyan">fpbs ( ⦃?,?,?⦄ ≥[?,?] ⦃?,?,?⦄ )</td>
+            <td class="snnn top cyan">fpbs_alt ( ⦃?,?,?⦄ ≥≥[?,?] ⦃?,?,?⦄ )</td>
+            <td class="snnn top cyan">fpbs_lift fpbs_aaa fpbs_fpb fpbs_fpbs</td>
+            <td class="ssnn top cyan">
               <br />
             </td>
-            <td class="snns plane cyan">decomposed extended computation</td>
-            <td class="snns file cyan">dxprs ( ⦃?,?⦄ ⊢ ? •*➡*[?] ? )</td>
-            <td class="snnn file cyan">dxprs_lift dxprs_ltpss_dx dxprs_ltpss_sn dxprs_aaa dxprs_dxprs</td>
-            <td class="snnn file cyan">
+          </tr>
+          <tr>
+            <td class="nnns top capitalize italic cyan">
               <br />
             </td>
-            <td class="snnn file cyan">
+            <td class="snns top italic cyan">decomposed rt-computation</td>
+            <td class="snns top cyan">scpds ( ⦃?,?⦄ ⊢ ? •*➡*[?,?,?] ? )</td>
+            <td class="snnn top cyan">scpds_lift scpds_aaa scpds_scpds</td>
+            <td class="snnn top cyan">
               <br />
             </td>
-            <td class="ssnn file cyan">
+            <td class="ssnn top cyan">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component cyan">
-              <br />
-            </td>
-            <td class="snns plane cyan">weakly normalizing computation</td>
-            <td class="snns file cyan">cpe ( ? ⊢ ➡* 𝐍⦃?⦄ )</td>
-            <td class="snnn file cyan">cpe_cpe</td>
-            <td class="snnn file cyan">
+            <td class="nnns top capitalize italic cyan">
               <br />
             </td>
-            <td class="snnn file cyan">
+            <td class="snns top italic cyan">context-sensitive rt-computation</td>
+            <td class="snns top cyan">lpxs ( ⦃?,?⦄ ⊢ ➡*[?,?] ? )</td>
+            <td class="snnn top cyan">lpxs_drop lpxs_lleq lpxs_aaa lpxs_cpxs lpxs_lpxs</td>
+            <td class="snnn top cyan">
               <br />
             </td>
-            <td class="ssnn file cyan">
+            <td class="ssnn top cyan">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component cyan">
+            <td class="nnns top capitalize italic cyan">
               <br />
             </td>
-            <td class="snns plane cyan">strongly normalizing computation</td>
-            <td class="snns file cyan">csn_vector ( ? ⊢ ⬊* ? )</td>
-            <td class="snnn file cyan">csn_cpr_vector csn_tstc_vector csn_aaa</td>
-            <td class="snnn file cyan">
+            <td class="nnns top italic cyan">
               <br />
             </td>
-            <td class="snnn file cyan">
+            <td class="snns top cyan">cpxs ( ⦃?,?⦄ ⊢ ? ➡*[?,?] ? )</td>
+            <td class="snnn top cyan">cpxs_tsts cpxs_tsts_vector cpxs_lreq cpxs_lift cpxs_lleq cpxs_aaa cpxs_cpxs</td>
+            <td class="snnn top cyan">
               <br />
             </td>
-            <td class="ssnn file cyan">
+            <td class="ssnn top cyan">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component cyan">
-              <br />
-            </td>
-            <td class="nnns plane cyan">
+            <td class="nnns top capitalize italic cyan">
               <br />
             </td>
-            <td class="snns file cyan">csn ( ? ⊢ ⬊* ? )</td>
-            <td class="snnn file cyan">csn_alt ( ? ⊢ ⬊⬊* ? )</td>
-            <td class="snnn file cyan">csn_lift csn_cpr csn_lfpr</td>
-            <td class="snnn file cyan">
+            <td class="snns top italic cyan">context-sensitive computation</td>
+            <td class="snns top cyan">lprs ( ⦃?,?⦄ ⊢ ➡* ? )</td>
+            <td class="snnn top cyan">lprs_drop lprs_cprs lprs_lprs</td>
+            <td class="snnn top cyan">
               <br />
             </td>
-            <td class="ssnn file cyan">
+            <td class="ssnn top cyan">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component cyan">
+            <td class="nnns top capitalize italic cyan">
               <br />
             </td>
-            <td class="snns plane cyan">context-sensitive computation</td>
-            <td class="snns file cyan">cprs (? ⊢ ? ➡* ?)</td>
-            <td class="snnn file cyan">cprs_lift cprs_tpss cprs_ltpss_dx cprs_ltpss_sn cprs_delift cprs_aaa cprs_ltpr cprs_lfpr cprs_cprs cprs_lfprs cprs_tstc cprs_tstc_vector</td>
-            <td class="snnn file cyan">
+            <td class="nnns top italic cyan">
               <br />
             </td>
-            <td class="snnn file cyan">
+            <td class="snns top cyan">cprs ( ⦃?,?⦄ ⊢ ? ➡* ?)</td>
+            <td class="snnn top cyan">cprs_lift cprs_cprs</td>
+            <td class="snnn top cyan">
               <br />
             </td>
-            <td class="ssnn file cyan">
+            <td class="ssnn top cyan">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component cyan">
+            <td class="nnns top capitalize italic cyan">
               <br />
             </td>
-            <td class="snns plane cyan">context-free computation</td>
-            <td class="snns file cyan">ltprs ( ? ➡* ? )</td>
-            <td class="snnn file cyan">ltprs_alt ( ? ➡➡* ? )</td>
-            <td class="snnn file cyan">ltprs_ldrop ltprs_ltprs</td>
-            <td class="snnn file cyan">
+            <td class="snns top italic cyan">local env. ref. for generic reducibility</td>
+            <td class="snns top cyan">lsubc ( ? ⊢ ? ⫃[?] ? )</td>
+            <td class="snnn top cyan">lsubc_drop lsubc_drops lsubc_lsuba</td>
+            <td class="snnn top cyan">
               <br />
             </td>
-            <td class="ssnn file cyan">
+            <td class="ssnn top cyan">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component cyan">
+            <td class="nnns top capitalize italic cyan">
               <br />
             </td>
-            <td class="nnns plane cyan">
+            <td class="snns top italic cyan">support for generic computation properties</td>
+            <td class="snns top cyan">gcp</td>
+            <td class="snnn top cyan">gcp_cr ( ⦃?,?,?⦄ ϵ[?] 〚?〛 )</td>
+            <td class="snnn top cyan">gcp_aaa</td>
+            <td class="ssnn top cyan">
               <br />
             </td>
-            <td class="snns file cyan">tprs ( ? ➡* ?)</td>
-            <td class="snnn file cyan">tprs_lift tprs_tprs</td>
-            <td class="snnn file cyan">
-              <br />
-            </td>
-            <td class="snnn file cyan">
-              <br />
-            </td>
-            <td class="ssnn file cyan">
+          </tr>
+          <tr>
+            <td class="snns top capitalize italic water">reduction</td>
+            <td class="snns top italic water">parallel qrst-reduction</td>
+            <td class="snns top water">fpbq ( ⦃?,?,?⦄ ≽[?,?] ⦃?,?,?⦄ )</td>
+            <td class="snnn top water">fpbq_alt ( ⦃?,?,?⦄ ≽≽[?,?] ⦃?,?,?⦄ )</td>
+            <td class="snnn top water">fpbq_lift fpbq_aaa</td>
+            <td class="ssnn top water">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component cyan">
+            <td class="nnns top capitalize italic water">
               <br />
             </td>
-            <td class="snns plane cyan">local env. ref. for abstract candidates of reducibility</td>
-            <td class="snns file cyan">lsubc ( ? ⊑[?] ? )</td>
-            <td class="snnn file cyan">lsubc_ldrop lsubc_ldrops lsubc_lsuba</td>
-            <td class="snnn file cyan">
+            <td class="nnns top italic water">
               <br />
             </td>
-            <td class="snnn file cyan">
+            <td class="snns top water">fpb ( ⦃?,?,?⦄ ≻[?,?] ⦃?,?,?⦄ )</td>
+            <td class="snnn top water">fpb_lift fpb_lleq fpb_fleq</td>
+            <td class="snnn top water">
               <br />
             </td>
-            <td class="ssnn file cyan">
+            <td class="ssnn top water">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component cyan">
+            <td class="nnns top capitalize italic water">
               <br />
             </td>
-            <td class="snns plane cyan">support for abstract computation properties</td>
-            <td class="snns file cyan">acp</td>
-            <td class="snnn file cyan">acp_cr ( ⦃?,?⦄ ϵ[?] 〚?〛 )</td>
-            <td class="snnn file cyan">acp_aaa</td>
-            <td class="snnn file cyan">
+            <td class="snns top italic water">normal forms for context-sensitive rt-reduction</td>
+            <td class="snns top water">cnx ( ⦃?,?⦄ ⊢ ➡[?,?] 𝐍⦃?⦄ )</td>
+            <td class="snnn top water">cnx_lift cnx_crx cnx_cix</td>
+            <td class="snnn top water">
               <br />
             </td>
-            <td class="ssnn file cyan">
+            <td class="ssnn top water">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="snns component water">reducibility</td>
-            <td class="snns plane water">context-sensitive focalized reduction</td>
-            <td class="snns file water">cfpr ( ? ⊢ ⦃?,?⦄ ➡ ⦃?,?⦄ )</td>
-            <td class="snnn file water">cnfpr_ltpss cfpr_aaa cfpr_cpr cfpr_cfpr</td>
-            <td class="snnn file water">
+            <td class="nnns top capitalize italic water">
               <br />
             </td>
-            <td class="snnn file water">
+            <td class="snns top italic water">context-sensitive rt-reduction</td>
+            <td class="snns top water">lpx ( ⦃?,?⦄ ⊢ ➡[?,?] ? )</td>
+            <td class="snnn top water">lpx_drop lpx_frees lpx_lleq lpx_aaa</td>
+            <td class="snnn top water">
               <br />
             </td>
-            <td class="ssnn file water">
+            <td class="ssnn top water">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component water">
+            <td class="nnns top capitalize italic water">
               <br />
             </td>
-            <td class="snns plane water">context-free focalized reduction</td>
-            <td class="snns file water">lfpr ( ⦃?⦄ ➡ ⦃?⦄ )</td>
-            <td class="snnn file water">lfpr_alt ( ⦃?⦄ ➡➡ ⦃?⦄ )</td>
-            <td class="snnn file water">lfpr_aaa lfpr_cpr lfpr_fpr lfpr_lfpr</td>
-            <td class="snnn file water">
+            <td class="nnns top italic water">
               <br />
             </td>
-            <td class="ssnn file water">
+            <td class="snns top water">cpx ( ⦃?,?⦄ ⊢ ? ➡[?,?] ? )</td>
+            <td class="snnn top water">cpx_lreq cpx_lift cpx_llpx_sn cpx_lleq cpx_cix</td>
+            <td class="snnn top water">
+              <br />
+            </td>
+            <td class="ssnn top water">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component water">
+            <td class="nnns top capitalize italic water">
               <br />
             </td>
-            <td class="nnns plane water">
+            <td class="snns top italic water">irreducible forms for context-sensitive rt-reduction</td>
+            <td class="snns top water">cix ( ⦃?,?⦄ ⊢ ➡[?,?] 𝐈⦃?⦄ )</td>
+            <td class="snnn top water">cix_lift</td>
+            <td class="snnn top water">
               <br />
             </td>
-            <td class="snns file water">fpr ( ⦃?,?⦄ ➡ ⦃?,?⦄ )</td>
-            <td class="snnn file water">fpr_cpr fpr_fpr</td>
-            <td class="snnn file water">
+            <td class="ssnn top water">
               <br />
             </td>
-            <td class="snnn file water">
+          </tr>
+          <tr>
+            <td class="nnns top capitalize italic water">
               <br />
             </td>
-            <td class="ssnn file water">
+            <td class="snns top italic water">reducible forms for context-sensitive rt-reduction</td>
+            <td class="snns top water">crx ( ⦃?,?⦄ ⊢ ➡[?,?] 𝐑⦃?⦄ )</td>
+            <td class="snnn top water">crx_lift</td>
+            <td class="snnn top water">
               <br />
             </td>
-          </tr>
-          <tr>
-            <td class="nnns component water">
+            <td class="ssnn top water">
               <br />
             </td>
-            <td class="snns plane water">context-sensitive normal forms</td>
-            <td class="snns file water">cnf ( ? ⊢ 𝐍⦃?⦄ )</td>
-            <td class="snnn file water">cnf_lift cnf_cif</td>
-            <td class="snnn file water">
+          </tr>
+          <tr>
+            <td class="nnns top capitalize italic water">
               <br />
             </td>
-            <td class="snnn file water">
+            <td class="snns top italic water">normal forms for context-sensitive reduction</td>
+            <td class="snns top water">cnr ( ⦃?,?⦄ ⊢ ➡ 𝐍⦃?⦄ )</td>
+            <td class="snnn top water">cnr_lift cnr_crr cnr_cir</td>
+            <td class="snnn top water">
               <br />
             </td>
-            <td class="ssnn file water">
+            <td class="ssnn top water">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component water">
-              <br />
-            </td>
-            <td class="snns plane water">context-sensitive reduction</td>
-            <td class="snns file water">cpr ( ? ⊢ ? ➡ ? )</td>
-            <td class="snnn file water">cpr_lift cpr_tpss cpr_ltpss_dx cpr_ltpss_sn cpr_delift cpr_aaa cpr_ltpr cpr_cpr</td>
-            <td class="snnn file water">
+            <td class="nnns top capitalize italic water">
               <br />
             </td>
-            <td class="snnn file water">
+            <td class="snns top italic water">context-sensitive reduction</td>
+            <td class="snns top water">lpr ( ⦃?,?⦄ ⊢ ➡ ? )</td>
+            <td class="snnn top water">lpr_drop lpr_lpr</td>
+            <td class="snnn top water">
               <br />
             </td>
-            <td class="ssnn file water">
+            <td class="ssnn top water">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component water">
+            <td class="nnns top capitalize italic water">
               <br />
             </td>
-            <td class="snns plane water">context-sensitive reducible forms</td>
-            <td class="snns file water">crf ( ? ⊢ 𝐑⦃?⦄ )</td>
-            <td class="snnn file water">crf_append</td>
-            <td class="snnn file water">cif ( ? ⊢ 𝐈⦃?⦄ )</td>
-            <td class="snnn file water">cif_append</td>
-            <td class="ssnn file water">
+            <td class="nnns top italic water">
               <br />
             </td>
-          </tr>
-          <tr>
-            <td class="nnns component water">
+            <td class="snns top water">cpr ( ⦃?,?⦄ ⊢ ? ➡ ? )</td>
+            <td class="snnn top water">cpr_lift cpr_llpx_sn cpr_cir</td>
+            <td class="snnn top water">
               <br />
             </td>
-            <td class="snns plane water">context-free normal forms</td>
-            <td class="snns file water">thnf ( 𝐇𝐍⦃?⦄ )</td>
-            <td class="snnn file water">
+            <td class="ssnn top water">
               <br />
             </td>
-            <td class="snnn file water">
+          </tr>
+          <tr>
+            <td class="nnns top capitalize italic water">
               <br />
             </td>
-            <td class="snnn file water">
+            <td class="snns top italic water">irreducible forms for context-sensitive reduction</td>
+            <td class="snns top water">cir ( ⦃?,?⦄ ⊢ ➡ 𝐈⦃?⦄ )</td>
+            <td class="snnn top water">cir_lift</td>
+            <td class="snnn top water">
               <br />
             </td>
-            <td class="ssnn file water">
+            <td class="ssnn top water">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component water">
+            <td class="nnns top capitalize italic water">
+              <br />
+            </td>
+            <td class="snns top italic water">reducible forms for context-sensitive reduction</td>
+            <td class="snns top water">crr ( ⦃?,?⦄ ⊢ ➡ 𝐑⦃?⦄ )</td>
+            <td class="snnn top water">crr_lift</td>
+            <td class="snnn top water">
               <br />
             </td>
-            <td class="snns plane water">context-free reduction</td>
-            <td class="snns file water">ltpr ( ? ➡ ? )</td>
-            <td class="snnn file water">ltpr_ldrop ltpr_tps ltpr_ltpss_dx ltpr_ltpss_sn ltpr_aaa ltpr_ltpr</td>
-            <td class="snnn file water">
+            <td class="ssnn top water">
               <br />
             </td>
-            <td class="snnn file water">
+          </tr>
+          <tr>
+            <td class="snns top capitalize italic green">unfold</td>
+            <td class="snns top italic green">unfold</td>
+            <td class="snns top green">unfold ( ⦃?,?⦄ ⊢ ? ⧫* ? )</td>
+            <td class="snnn top green">
               <br />
             </td>
-            <td class="ssnn file water">
+            <td class="snnn top green">
+              <br />
+            </td>
+            <td class="ssnn top green">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component water">
+            <td class="nnns top capitalize italic green">
               <br />
             </td>
-            <td class="nnns plane water">
+            <td class="snns top italic green">iterated static type assignment</td>
+            <td class="snns top green">lstas ( ⦃?,?⦄ ⊢ ? •*[?,?] ? )</td>
+            <td class="snnn top green">lstas_lift lstas_llpx_sn.ma lstas_aaa lstas_da lstas_lstas</td>
+            <td class="snnn top green">
               <br />
             </td>
-            <td class="snns file water">tpr ( ? ➡ ? )</td>
-            <td class="snnn file water">tpr_lift tpr_tps tpr_tpss tpr_delift tpr_tpr</td>
-            <td class="snnn file water">
+            <td class="ssnn top green">
               <br />
             </td>
-            <td class="snnn file water">
+          </tr>
+          <tr>
+            <td class="snns top capitalize italic grass">static typing</td>
+            <td class="snns top italic grass">local env. ref. for degree assignment</td>
+            <td class="snns top grass">lsubd ( ? ⊢ ? ⫃▪[?,?] ? )</td>
+            <td class="snnn top grass">lsubd_da lsubd_lsubd</td>
+            <td class="snnn top grass">
               <br />
             </td>
-            <td class="ssnn file water">
+            <td class="ssnn top grass">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="snns component green">unwind</td>
-            <td class="snns plane green">iterated stratified static type assignment</td>
-            <td class="snns file green">sstas ( ⦃?,?⦄ ⊢ ? •*[?] ? )</td>
-            <td class="snnn file green">sstas_lift sstas_ltpss_dx sstas_ltpss_sn sstas_aaa sstas_sstas</td>
-            <td class="snnn file green">
+            <td class="nnns top capitalize italic grass">
               <br />
             </td>
-            <td class="snnn file green">
+            <td class="snns top italic grass">degree assignment</td>
+            <td class="snns top grass">da ( ⦃?,?⦄ ⊢ ? ▪[?,?] ? )</td>
+            <td class="snnn top grass">da_lift da_aaa da_da</td>
+            <td class="snnn top grass">
               <br />
             </td>
-            <td class="ssnn file green">
+            <td class="ssnn top grass">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="snns component grass">static typing</td>
-            <td class="snns plane grass">stratified static type assignment</td>
-            <td class="snns file grass">ssta ( ⦃?,?⦄ ⊢ ? •[?,?] ? )</td>
-            <td class="snnn file grass">ssta_lift ssta_ltpss_dx ssta_ltpss_sn ssta_aaa ssta_ssta</td>
-            <td class="snnn file grass">
+            <td class="nnns top capitalize italic grass">
               <br />
             </td>
-            <td class="snnn file grass">
+            <td class="snns top italic grass">parameters</td>
+            <td class="snns top grass">sh</td>
+            <td class="snnn top grass">sd</td>
+            <td class="snnn top grass">
               <br />
             </td>
-            <td class="ssnn file grass">
+            <td class="ssnn top grass">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component grass">
-              <br />
-            </td>
-            <td class="snns plane grass">local env. ref. for atomic arity assignment</td>
-            <td class="snns file grass">lsuba ( ? ⁝⊑ ? )</td>
-            <td class="snnn file grass">lsuba_ldrop lsuba_aaa lsuba_lsuba</td>
-            <td class="snnn file grass">
+            <td class="nnns top capitalize italic grass">
               <br />
             </td>
-            <td class="snnn file grass">
+            <td class="snns top italic grass">local env. ref. for atomic arity assignment</td>
+            <td class="snns top grass">lsuba ( ? ⊢ ? ⫃⁝ ? )</td>
+            <td class="snnn top grass">lsuba_aaa lsuba_lsuba</td>
+            <td class="snnn top grass">
               <br />
             </td>
-            <td class="ssnn file grass">
+            <td class="ssnn top grass">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component grass">
+            <td class="nnns top capitalize italic grass">
               <br />
             </td>
-            <td class="snns plane grass">atomic arity assignment</td>
-            <td class="snns file grass">aaa ( ? ⊢ ? ⁝ ? )</td>
-            <td class="snnn file grass">aaa_lift aaa_lifts aaa_ltpss_dx aaa_ltpss_sn aaa_aaa</td>
-            <td class="snnn file grass">
+            <td class="snns top italic grass">atomic arity assignment</td>
+            <td class="snns top grass">aaa ( ⦃?,?⦄ ⊢ ? ⁝ ? )</td>
+            <td class="snnn top grass">aaa_lift aaa_lifts aaa_fqus aaa_lleq aaa_aaa</td>
+            <td class="snnn top grass">
               <br />
             </td>
-            <td class="snnn file grass">
-              <br />
-            </td>
-            <td class="ssnn file grass">
+            <td class="ssnn top grass">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component grass">
+            <td class="nnns top capitalize italic grass">
               <br />
             </td>
-            <td class="snns plane grass">parameters</td>
-            <td class="snns file grass">sh</td>
-            <td class="snnn file grass">sd</td>
-            <td class="snnn file grass">
+            <td class="snns top italic grass">restricted local env. ref.</td>
+            <td class="snns top grass">lsubr ( ? ⫃ ? )</td>
+            <td class="snnn top grass">lsubr_lsubr</td>
+            <td class="snnn top grass">
               <br />
             </td>
-            <td class="snnn file grass">
+            <td class="ssnn top grass">
               <br />
             </td>
-            <td class="ssnn file grass">
+          </tr>
+          <tr>
+            <td class="snns top capitalize italic yellow">multiple substitution</td>
+            <td class="snns top italic yellow">lazy equivalence</td>
+            <td class="snns top yellow">fleq ( ⦃?,?,?⦄ ≡[?] ⦃?,?,?⦄ )</td>
+            <td class="snnn top yellow">fleq_fleq</td>
+            <td class="snnn top yellow">
+              <br />
+            </td>
+            <td class="ssnn top yellow">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="snns component yellow">unfold</td>
-            <td class="snns plane yellow">basic local env. thinning</td>
-            <td class="snns file yellow">thin ( ? ▼*[?,?] ≡ ? )</td>
-            <td class="snnn file yellow">thin_ldrop thin_delift</td>
-            <td class="snnn file yellow">
+            <td class="nnns top capitalize italic yellow">
+              <br />
+            </td>
+            <td class="nnns top italic yellow">
               <br />
             </td>
-            <td class="snnn file yellow">
+            <td class="snns top yellow">lleq ( ? ≡[?,?] ? )</td>
+            <td class="snnn top yellow">lleq_alt lleq_alt_rec lleq_lreq lleq_drop lleq_fqus lleq_llor lleq_lleq</td>
+            <td class="snnn top yellow">
               <br />
             </td>
-            <td class="ssnn file yellow">
+            <td class="ssnn top yellow">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component yellow">
+            <td class="nnns top capitalize italic yellow">
               <br />
             </td>
-            <td class="snns plane yellow">inverse basic term relocation</td>
-            <td class="snns file yellow">delift ( ? ⊢ ? ▼*[?,?] ≡ ? )</td>
-            <td class="snnn file yellow">delift_alt ( ? ⊢ ? ▼▼*[?,?] ≡ ? )</td>
-            <td class="snnn file yellow">delift_lift delift_tpss delift_ltpss delift_delift</td>
-            <td class="snnn file yellow">
+            <td class="snns top italic yellow">lazy pointwise extension of a relation</td>
+            <td class="snns top yellow">llpx_sn</td>
+            <td class="snnn top yellow">llpx_sn_alt llpx_sn_alt_rec llpx_sn_tc llpx_sn_lreq llpx_sn_drop llpx_sn_lpx_sn llpx_sn_frees llpx_sn_llor</td>
+            <td class="snnn top yellow">
               <br />
             </td>
-            <td class="ssnn file yellow">
+            <td class="ssnn top yellow">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component yellow">
+            <td class="nnns top capitalize italic yellow">
               <br />
             </td>
-            <td class="snns plane yellow">partial unfold</td>
-            <td class="snns file yellow">ltpss_sn ( ? ⊢ ▶*[?,?] ? )</td>
-            <td class="snnn file yellow">ltpss_sn_alt ( ? ⊢ ▶▶*[?,?] ? )</td>
-            <td class="snnn file yellow">ltpss_sn_ldrop ltpss_sn_tps ltpss_sn_tpss ltpss_sn_ltpss_sn</td>
-            <td class="snnn file yellow">
+            <td class="snns top italic yellow">pointwise union for local environments</td>
+            <td class="snns top yellow">llor ( ? ⋓[?,?] ? ≡ ? )</td>
+            <td class="snnn top yellow">llor_alt llor_drop</td>
+            <td class="snnn top yellow">
               <br />
             </td>
-            <td class="ssnn file yellow">
+            <td class="ssnn top yellow">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component yellow">
+            <td class="nnns top capitalize italic yellow">
               <br />
             </td>
-            <td class="nnns plane yellow">
+            <td class="snns top italic yellow">context-sensitive exclusion from free variables</td>
+            <td class="snns top yellow">frees ( ? ⊢ ? ϵ 𝐅*[?]⦃?⦄ )</td>
+            <td class="snnn top yellow">frees_append frees_lreq frees_lift</td>
+            <td class="snnn top yellow">
               <br />
             </td>
-            <td class="snns file yellow">ltpss_dx ( ? ▶*[?,?] ? )</td>
-            <td class="snnn file yellow">ltpss_dx_ldrop ltpss_dx_tps ltpss_dx_tpss ltpss_dx_ltpss_dx</td>
-            <td class="snnn file yellow">
+            <td class="ssnn top yellow">
               <br />
             </td>
-            <td class="snnn file yellow">
+          </tr>
+          <tr>
+            <td class="nnns top capitalize italic yellow">
               <br />
             </td>
-            <td class="ssnn file yellow">
+            <td class="snns top italic yellow">contxt-sensitive multiple rt-substitution</td>
+            <td class="snns top yellow">cpys ( ⦃?,?⦄ ⊢ ? ▶*[?,?] ? )</td>
+            <td class="snnn top yellow">cpys_alt ( ⦃?,?⦄ ⊢ ? ▶▶*[?,?] ? )</td>
+            <td class="snnn top yellow">cpys_lift cpys_cpys</td>
+            <td class="ssnn top yellow">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component yellow">
+            <td class="nnns top capitalize italic yellow">
               <br />
             </td>
-            <td class="nnns plane yellow">
+            <td class="snns top italic yellow">iterated structural successor for closures</td>
+            <td class="snns top yellow">fqus ( ⦃?,?,?⦄ ⊐* ⦃?,?,?⦄ )</td>
+            <td class="snnn top yellow">fqus_alt fqus_fqus</td>
+            <td class="snnn top yellow">
               <br />
             </td>
-            <td class="snns file yellow">tpss ( ? ⊢ ? ▶*[?,?] ? )</td>
-            <td class="snnn file yellow">tpss_alt ( ? ⊢ ? ▶▶*[?,?] ? )</td>
-            <td class="snnn file yellow">tpss_lift</td>
-            <td class="snnn file yellow">tpss_tpss</td>
-            <td class="ssnn file yellow">
+            <td class="ssnn top yellow">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component yellow">
+            <td class="nnns top capitalize italic yellow">
               <br />
             </td>
-            <td class="snns plane yellow">generic local env. slicing</td>
-            <td class="snns file yellow">ldrops ( ⇩*[?] ? ≡ ? )</td>
-            <td class="snnn file yellow">ldrops_ldrop ldrops_ldrops</td>
-            <td class="snnn file yellow">
+            <td class="nnns top italic yellow">
               <br />
             </td>
-            <td class="snnn file yellow">
+            <td class="snns top yellow">fqup ( ⦃?,?,?⦄ ⊐+ ⦃?,?,?⦄ )</td>
+            <td class="snnn top yellow">fqup_fqup</td>
+            <td class="snnn top yellow">
               <br />
             </td>
-            <td class="ssnn file yellow">
+            <td class="ssnn top yellow">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component yellow">
-              <br />
-            </td>
-            <td class="snns plane yellow">iterated restricted structural predecessor for closures</td>
-            <td class="snns file yellow">frsups ( ⦃?,?⦄ ⧁* ⦃?,?⦄ )</td>
-            <td class="snnn file yellow">frsups_frsups</td>
-            <td class="snnn file yellow">
+            <td class="nnns top capitalize italic yellow">
               <br />
             </td>
-            <td class="snnn file yellow">
+            <td class="snns top italic yellow">iterated local env. slicing</td>
+            <td class="snns top yellow">drops ( ⬇*[?,?] ? ≡ ? )</td>
+            <td class="snnn top yellow">drops_drop drops_drops</td>
+            <td class="snnn top yellow">
               <br />
             </td>
-            <td class="ssnn file yellow">
+            <td class="ssnn top yellow">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component yellow">
-              <br />
-            </td>
-            <td class="nnns plane yellow">
+            <td class="nnns top capitalize italic yellow">
               <br />
             </td>
-            <td class="snns file yellow">frsupp ( ⦃?,?⦄ ⧁+ ⦃?,?⦄ )</td>
-            <td class="snnn file yellow">frsupp_frsupp</td>
-            <td class="snnn file yellow">
+            <td class="snns top italic yellow">generic term relocation</td>
+            <td class="snns top yellow">lifts_vector ( ⬆*[?] ? ≡ ? )</td>
+            <td class="snnn top yellow">lifts_lift_vector</td>
+            <td class="snnn top yellow">
               <br />
             </td>
-            <td class="snnn file yellow">
-              <br />
-            </td>
-            <td class="ssnn file yellow">
+            <td class="ssnn top yellow">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component yellow">
+            <td class="nnns top capitalize italic yellow">
               <br />
             </td>
-            <td class="snns plane yellow">generic term relocation</td>
-            <td class="snns file yellow">lifts_vector ( ⇧*[?] ? ≡ ? )</td>
-            <td class="snnn file yellow">lifts_lift_vector</td>
-            <td class="snnn file yellow">
+            <td class="nnns top italic yellow">
               <br />
             </td>
-            <td class="snnn file yellow">
+            <td class="snns top yellow">lifts ( ⬆*[?] ? ≡ ? )</td>
+            <td class="snnn top yellow">lifts_lift lifts_lifts</td>
+            <td class="snnn top yellow">
               <br />
             </td>
-            <td class="ssnn file yellow">
+            <td class="ssnn top yellow">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component yellow">
+            <td class="nnns top capitalize italic yellow">
               <br />
             </td>
-            <td class="nnns plane yellow">
-              <br />
-            </td>
-            <td class="snns file yellow">lifts ( ⇧*[?] ? ≡ ? )</td>
-            <td class="snnn file yellow">lifts_lift lifts_lifts</td>
-            <td class="snnn file yellow">
-              <br />
-            </td>
-            <td class="snnn file yellow">
+            <td class="snns top italic yellow">support for multiple relocation</td>
+            <td class="snns top yellow">mr2 ( @⦃?,?⦄ ≡ ? )</td>
+            <td class="snnn top yellow">mr2_plus ( ? + ? )</td>
+            <td class="snnn top yellow">mr2_minus ( ? ▭ ? ≡ ? )</td>
+            <td class="ssnn top yellow">mr2_mr2</td>
+          </tr>
+          <tr>
+            <td class="snns top capitalize italic orange">substitution</td>
+            <td class="snns top italic orange">structural successor for closures</td>
+            <td class="snns top orange">fquq ( ⦃?,?,?⦄ ⊐⸮ ⦃?,?,?⦄ )</td>
+            <td class="snnn top orange">fquq_alt ( ⦃?,?,?⦄ ⊐⊐⸮ ⦃?,?,?⦄ )</td>
+            <td class="snnn top orange">
               <br />
             </td>
-            <td class="ssnn file yellow">
+            <td class="ssnn top orange">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component yellow">
+            <td class="nnns top capitalize italic orange">
               <br />
             </td>
-            <td class="snns plane yellow">support for generic relocation</td>
-            <td class="snns file yellow">gr2 ( @⦃?,?⦄ ≡ ? )</td>
-            <td class="snnn file yellow">gr2_plus ( ? + ? )</td>
-            <td class="snnn file yellow">gr2_minus ( ? ▭ ? ≡ ? )</td>
-            <td class="snnn file yellow">gr2_gr2</td>
-            <td class="ssnn file yellow">
+            <td class="nnns top italic orange">
               <br />
             </td>
-          </tr>
-          <tr>
-            <td class="snns component orange">substitution</td>
-            <td class="snns plane orange">parallel substitution</td>
-            <td class="snns file orange">tps ( ? ⊢ ? ▶[?,?] ? )</td>
-            <td class="snnn file orange">tps_lift tps_tps</td>
-            <td class="snnn file orange">
+            <td class="snns top orange">fqu ( ⦃?,?,?⦄ ⊐ ⦃?,?,?⦄ )</td>
+            <td class="snnn top orange">
               <br />
             </td>
-            <td class="snnn file orange">
+            <td class="snnn top orange">
               <br />
             </td>
-            <td class="ssnn file orange">
+            <td class="ssnn top orange">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component orange">
-              <br />
-            </td>
-            <td class="snns plane orange">global env. slicing</td>
-            <td class="snns file orange">gdrop ( ⇩[?] ? ≡ ? )</td>
-            <td class="snnn file orange">gdrop_gdrop</td>
-            <td class="snnn file orange">
+            <td class="nnns top capitalize italic orange">
               <br />
             </td>
-            <td class="snnn file orange">
+            <td class="snns top italic orange">global env. slicing</td>
+            <td class="snns top orange">gget ( ⬇[?] ? ≡ ? )</td>
+            <td class="snnn top orange">gget_gget</td>
+            <td class="snnn top orange">
               <br />
             </td>
-            <td class="ssnn file orange">
+            <td class="ssnn top orange">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component orange">
-              <br />
-            </td>
-            <td class="snns plane orange">basic local env. slicing</td>
-            <td class="snns file orange">ldrop ( ⇩[?,?] ? ≡ ? )</td>
-            <td class="snnn file orange">ldrop_append ldrop_lpx ldrop_lbotr ldrop_ldrop</td>
-            <td class="snnn file orange">
+            <td class="nnns top capitalize italic orange">
               <br />
             </td>
-            <td class="snnn file orange">
+            <td class="snns top italic orange">contxt-sensitive ordinary rt-substitution</td>
+            <td class="snns top orange">cpy ( ⦃?,?⦄ ⊢ ? ▶[?,?] ? )</td>
+            <td class="snnn top orange">cpy_lift cpy_nlift cpy_cpy</td>
+            <td class="snnn top orange">
               <br />
             </td>
-            <td class="ssnn file orange">
+            <td class="ssnn top orange">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component orange">
+            <td class="nnns top capitalize italic orange">
               <br />
             </td>
-            <td class="snns plane orange">local env. ref. for substitution</td>
-            <td class="snns file orange">lsubr ( ? ⊑[?,?] ? )</td>
-            <td class="snnn file orange">(lsubr_lsubr)</td>
-            <td class="snnn file orange">lsubr_lbotr ( ⊒[?,?] ? )</td>
-            <td class="snnn file orange">
+            <td class="snns top italic orange">local env. ref. for rt-substitution</td>
+            <td class="snns top orange">lsuby ( ? ⊆[?,?] ? )</td>
+            <td class="snnn top orange">lsuby_lsuby</td>
+            <td class="snnn top orange">
               <br />
             </td>
-            <td class="ssnn file orange">
+            <td class="ssnn top orange">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component orange">
+            <td class="nnns top capitalize italic orange">
               <br />
             </td>
-            <td class="snns plane orange">restricted structural predecessor for closures</td>
-            <td class="snns file orange">frsup ( ⦃?,?⦄ ⧁ ⦃?,?⦄ )</td>
-            <td class="snnn file orange">
+            <td class="snns top italic orange">pointwise extension of a relation</td>
+            <td class="snns top orange">lpx_sn</td>
+            <td class="snnn top orange">lpx_sn_alt lpx_sn_tc lpx_sn_drop lpx_sn_lpx_sn</td>
+            <td class="snnn top orange">
               <br />
             </td>
-            <td class="snnn file orange">
+            <td class="ssnn top orange">
               <br />
             </td>
-            <td class="snnn file orange">
+          </tr>
+          <tr>
+            <td class="nnns top capitalize italic orange">
               <br />
             </td>
-            <td class="ssnn file orange">
+            <td class="snns top italic orange">basic local env. slicing</td>
+            <td class="snns top orange">drop ( ⬇[?,?,?] ? ≡ ? )</td>
+            <td class="snnn top orange">drop_append drop_lreq drop_drop</td>
+            <td class="snnn top orange">
               <br />
             </td>
-          </tr>
-          <tr>
-            <td class="nnns component orange">
+            <td class="ssnn top orange">
               <br />
             </td>
-            <td class="snns plane orange">basic term relocation</td>
-            <td class="snns file orange">lift_vector ( ⇧[?,?] ? ≡ ? )</td>
-            <td class="snnn file orange">lift_lift_vector</td>
-            <td class="snnn file orange">
+          </tr>
+          <tr>
+            <td class="nnns top capitalize italic orange">
               <br />
             </td>
-            <td class="snnn file orange">
+            <td class="snns top italic orange">basic term relocation</td>
+            <td class="snns top orange">lift_vector ( ⬆[?,?] ? ≡ ? )</td>
+            <td class="snnn top orange">lift_lift_vector</td>
+            <td class="snnn top orange">
               <br />
             </td>
-            <td class="ssnn file orange">
+            <td class="ssnn top orange">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component orange">
+            <td class="nnns top capitalize italic orange">
               <br />
             </td>
-            <td class="nnns plane orange">
+            <td class="nnns top italic orange">
               <br />
             </td>
-            <td class="snns file orange">lift ( ⇧[?,?] ? ≡ ? )</td>
-            <td class="snnn file orange">lift_lift</td>
-            <td class="snnn file orange">
+            <td class="snns top orange">lift ( ⬆[?,?] ? ≡ ? )</td>
+            <td class="snnn top orange">lift_neq lift_lift</td>
+            <td class="snnn top orange">
               <br />
             </td>
-            <td class="snnn file orange">
-              <br />
-            </td>
-            <td class="ssnn file orange">
+            <td class="ssnn top orange">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="snns component red">grammar</td>
-            <td class="snns plane red">same head term form</td>
-            <td class="snns file red">tshf ( ? ≈ ? )</td>
-            <td class="snnn file red">(tshf_tshf)</td>
-            <td class="snnn file red">
-              <br />
-            </td>
-            <td class="snnn file red">
+            <td class="snns top capitalize italic red">grammar</td>
+            <td class="snns top italic red">equivalence for local environments</td>
+            <td class="snns top red">lreq ( ? ⩬[?,?] ? )</td>
+            <td class="snnn top red">lreq_lreq</td>
+            <td class="snnn top red">
               <br />
             </td>
-            <td class="ssnn file red">
+            <td class="ssnn top red">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component red">
-              <br />
-            </td>
-            <td class="snns plane red">same top term constructor</td>
-            <td class="snns file red">tstc ( ? ≃ ? )</td>
-            <td class="snnn file red">tstc_tstc tstc_vector</td>
-            <td class="snnn file red">
+            <td class="nnns top capitalize italic red">
               <br />
             </td>
-            <td class="snnn file red">
+            <td class="snns top italic red">same top term structure</td>
+            <td class="snns top red">tsts ( ? ≂ ? )</td>
+            <td class="snnn top red">tsts_tsts tsts_vector</td>
+            <td class="snnn top red">
               <br />
             </td>
-            <td class="ssnn file red">
+            <td class="ssnn top red">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component red">
+            <td class="nnns top capitalize italic red">
               <br />
             </td>
-            <td class="snns plane red">closures</td>
-            <td class="snns file red">cl_shift ( ? @@ ? )</td>
-            <td class="snnn file red">cl_weight ( ♯{?,?} )</td>
-            <td class="snnn file red">
+            <td class="snns top italic red">closures</td>
+            <td class="snns top red">cl_weight ( ♯{?,?,?} )</td>
+            <td class="snnn top red">cl_restricted_weight ( ♯{?,?} )</td>
+            <td class="snnn top red">
               <br />
             </td>
-            <td class="snnn file red">
-              <br />
-            </td>
-            <td class="ssnn file red">
+            <td class="ssnn top red">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component red">
-              <br />
-            </td>
-            <td class="snns plane red">internal syntax</td>
-            <td class="snns file red">genv</td>
-            <td class="snnn file red">
+            <td class="nnns top capitalize italic red">
               <br />
             </td>
-            <td class="snnn file red">
+            <td class="snns top italic red">internal syntax</td>
+            <td class="snns top red">genv</td>
+            <td class="snnn top red">
               <br />
             </td>
-            <td class="snnn file red">
+            <td class="snnn top red">
               <br />
             </td>
-            <td class="ssnn file red">
+            <td class="ssnn top red">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnns component red">
+            <td class="nnns top capitalize italic red">
               <br />
             </td>
-            <td class="nnns plane red">
+            <td class="nnns top italic red">
               <br />
             </td>
-            <td class="snns file red">lenv</td>
-            <td class="snnn file red">lenv_weight ( ♯{?} )</td>
-            <td class="snnn file red">lenv_length ( |?| )</td>
-            <td class="snnn file red">lenv_append ( ? @@ ? )</td>
-            <td class="ssnn file red">lenv_px lenv_px_bi</td>
+            <td class="snns top red">lenv</td>
+            <td class="snnn top red">lenv_weight ( ♯{?} )</td>
+            <td class="snnn top red">lenv_length ( |?| )</td>
+            <td class="ssnn top red">lenv_append ( ? @@ ? )</td>
           </tr>
           <tr>
-            <td class="nnns component red">
-              <br />
-            </td>
-            <td class="nnns plane red">
+            <td class="nnns top capitalize italic red">
               <br />
             </td>
-            <td class="snns file red">term</td>
-            <td class="snnn file red">term_weight ( ♯{?} )</td>
-            <td class="snnn file red">term_simple ( 𝐒⦃?⦄ )</td>
-            <td class="snnn file red">term_vector</td>
-            <td class="ssnn file red">
+            <td class="nnns top italic red">
               <br />
             </td>
+            <td class="snns top red">term</td>
+            <td class="snnn top red">term_weight ( ♯{?} )</td>
+            <td class="snnn top red">term_simple ( 𝐒⦃?⦄ )</td>
+            <td class="ssnn top red">term_vector ( Ⓐ?.? )</td>
           </tr>
           <tr>
-            <td class="nnns component red">
+            <td class="nnns top capitalize italic red">
               <br />
             </td>
-            <td class="nnns plane red">
+            <td class="nnns top italic red">
               <br />
             </td>
-            <td class="snns file red">item</td>
-            <td class="snnn file red">
+            <td class="snns top red">item</td>
+            <td class="snnn top red">
               <br />
             </td>
-            <td class="snnn file red">
+            <td class="snnn top red">
               <br />
             </td>
-            <td class="snnn file red">
-              <br />
-            </td>
-            <td class="ssnn file red">
+            <td class="ssnn top red">
               <br />
             </td>
           </tr>
           <tr>
-            <td class="nnss component red">
+            <td class="nnss top capitalize italic red">
               <br />
             </td>
-            <td class="snss plane red">external syntax</td>
-            <td class="snss file red">aarity</td>
-            <td class="snsn file red">
+            <td class="snss top italic red">external syntax</td>
+            <td class="snss top red">aarity</td>
+            <td class="snsn top red">
               <br />
             </td>
-            <td class="snsn file red">
+            <td class="snsn top red">
               <br />
             </td>
-            <td class="snsn file red">
-              <br />
-            </td>
-            <td class="sssn file red">
+            <td class="sssn top red">
               <br />
             </td>
           </tr>
       </table>
     </div>
 
-   <div xmlns:ld="http://lambdadelta.info/" class="head2">Physical Structure of the Specification</div>
-   <div xmlns:ld="http://lambdadelta.info/" class="text">The source files are grouped in directories,
-         one for each component.
-   </div>
    <div class="spacer">
       <img class="rule" alt="[Spacer]" title="lambdadelta rainbow rule" src="http://lambdadelta.info/images/rainbow.png" />
     </div>
     <div xmlns:ld="http://lambdadelta.info/" class="spacer">
       <br />
     </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Mon, 18 Mar 2013 20:23:14 +0100</div>
+    <div xmlns:ld="http://lambdadelta.info/" class="spacer">Last update: Tue, 28 Oct 2014 17:45:56 +0100</div>
 </body>
 </html>