]> matita.cs.unibo.it Git - helm.git/blobdiff - helm/ocaml/cic_transformations/content2pres.ml
* the transformations have been ported so to generate BoxML + MathML
[helm.git] / helm / ocaml / cic_transformations / content2pres.ml
index c0cdc5c0f0f0c289cc07afd85c1127161b25d2d8..a2a010f7d0e925b812ed368e05e99d06b0320a90 100644 (file)
@@ -32,6 +32,9 @@
 (*                                                                         *)
 (***************************************************************************)
 
+module P = Mpresentation
+module B = Box
+
 let p_mtr a b = Mpresentation.Mtr(a,b)
 let p_mtd a b = Mpresentation.Mtd(a,b)
 let p_mtable a b = Mpresentation.Mtable(a,b)
@@ -41,7 +44,6 @@ let p_mo a b = Mpresentation.Mo(a,b)
 let p_mrow a b = Mpresentation.Mrow(a,b)
 let p_mphantom a b = Mpresentation.Mphantom(a,b)
 
-
 let rec split n l =
   if n = 0 then [],l
   else let l1,l2 = 
@@ -138,35 +140,23 @@ let get_xref =
 ;;
 
 let make_row ?(attrs=[]) items concl =
-  let module P = Mpresentation in
-    (match concl with 
-       P.Mtable _ -> (* big! *)
-         P.Mtable (attrs@[None,"align","baseline 1"; None,"equalrows","false";
-          None,"columnalign","left"],
-           [P.Mtr([],[P.Mtd ([],P.Mrow([],items))]);
-            P.Mtr ([],[P.Mtd ([],P.indented concl)])])
-     | _ ->  (* small *)
-       P.Mrow(attrs,items@[P.Mspace([None,"width","0.1cm"]);concl]))
+  match concl with 
+      B.V _ -> (* big! *)
+        B.b_v attrs [B.b_h [] items; B.b_indent concl]
+    | _ ->  (* small *)
+       B.b_h attrs (items@[B.b_space; concl])
 ;;
 
 let make_concl ?(attrs=[]) verb concl =
-  let module P = Mpresentation in
-    (match concl with 
-       P.Mtable _ -> (* big! *)
-         P.Mtable (attrs@[None,"align","baseline 1"; None,"equalrows","false";
-          None,"columnalign","left"],
-           [P.Mtr([],[P.Mtd ([],P.Mtext([None,"mathcolor","Red"],verb))]);
-            P.Mtr ([],[P.Mtd ([],P.indented concl)])])
-     | _ ->  (* small *)
-       P.Mrow(attrs,
-        [P.Mtext([None,"mathcolor","Red"],verb); 
-         P.Mspace([None,"width","0.1cm"]);
-         concl]))
+  match concl with 
+      B.V _ -> (* big! *)
+        B.b_v attrs [ B.b_kw verb; B.b_indent concl]
+    | _ ->  (* small *)
+       B.b_h attrs [ B.b_kw verb; B.b_space; concl ]
 ;;
 
 let make_args_for_apply term2pres args =
  let module Con = Content in
- let module P = Mpresentation in
  let make_arg_for_apply is_first arg row = 
   let res =
    match arg with 
@@ -176,18 +166,18 @@ let make_args_for_apply term2pres args =
           (match prem.Con.premise_binder with
              None -> "previous"
            | Some s -> s) in
-        P.Mi([],name)::row
+        (B.b_object (P.Mi ([], name)))::row
     | Con.Lemma lemma -> 
-         P.Mi([],lemma.Con.lemma_name)::row 
+        (B.b_object (P.Mi([],lemma.Con.lemma_name)))::row 
     | Con.Term t -> 
         if is_first then
           (term2pres t)::row
-        else P.Mi([],"_")::row
+        else (B.b_object (P.Mi([],"_")))::row
     | Con.ArgProof _ 
     | Con.ArgMethod _ -> 
-       P.Mi([],"_")::row
+       (B.b_object (P.Mi([],"_")))::row
   in
-   if is_first then res else P.smallskip::res
+   if is_first then res else B.skip::res
  in
   match args with 
     hd::tl -> 
@@ -205,15 +195,14 @@ let rec justification term2pres p =
       (p.Con.proof_conclude.Con.conclude_method = "Apply"))) then
     let pres_args = 
       make_args_for_apply term2pres p.Con.proof_conclude.Con.conclude_args in
-    P.Mrow([],
-      P.Mtext([None,"mathcolor","Red"],"by")::P.Mspace([None,"width","0.1cm"])::
-      P.Mo([],"(")::pres_args@[P.Mo([],")")]) 
+    B.H([],
+      (B.b_kw "by")::B.b_space::
+      B.Text([],"(")::pres_args@[B.Text([],")")]) 
   else proof2pres term2pres p 
      
 and proof2pres term2pres p =
   let rec proof2pres p =
     let module Con = Content in
-    let module P = Mpresentation in
       let indent = 
         let is_decl e = 
           (match e with 
@@ -238,33 +227,21 @@ and proof2pres term2pres p =
           let action = 
            match concl with
               None -> body
-(*
-               P.Maction
-                 ([None,"actiontype","toggle" ; None,"selection","1"],
-                  [P.Mtext [] "proof" ; body])
-*)
             | Some ac ->
-               P.Maction
-                 ([None,"actiontype","toggle" ; None,"selection","1"],
+               B.Action
+                 ([None,"type","toggle"],
                   [(make_concl ~attrs:[Some "helm", "xref", p.Con.proof_id]
                      "proof of" ac); body])
           in
-          P.Mtable ([None,"align","baseline 1"; None,"equalrows","false";
-              None,"columnalign","left"],
-            [P.Mtr ([],[P.Mtd ([],P.Mfenced([],[P.Mtext ([],name)]))]);
-             P.Mtr ([],[P.Mtd ([], P.indented action)])])
-(*
-          P.Mtable ([None,"align","baseline 1"; None,"equalrows","false";
-              None,"columnalign","left";Some "helm", "xref", p.Con.proof_id],
-            [P.Mtr ([],[P.Mtd ([],P.Mfenced([],[P.Mtext ([],name)]))]);
-             P.Mtr ([],[P.Mtd ([], P.indented action)])]) *)
+          B.V ([],
+            [B.Text ([],"(" ^ name ^ ")");
+             B.indent action])
 
   and context2pres c continuation =
     (* we generate a subtable for each context element, for selection
        purposes 
        The table generated by the head-element does not have an xref;
        the whole context-proof is already selectable *)
-    let module P = Mpresentation in
     match c with
       [] -> continuation
     | hd::tl -> 
@@ -272,30 +249,27 @@ and proof2pres term2pres p =
           List.fold_right
             (fun ce continuation ->
               let xref = get_xref ce in
-              P.Mtable([None,"align","baseline 1"; None,"equalrows","false";
-               None,"columnalign","left"; Some "helm", "xref", xref ],
-                [P.Mtr([Some "helm", "xref", "ce_"^xref],[P.Mtd ([],ce2pres ce)]);
-                 P.Mtr([],[P.Mtd ([], continuation)])])) tl continuation in
+              B.V([Some "helm", "xref", xref ],
+                [B.H([Some "helm", "xref", "ce_"^xref],[ce2pres ce]);
+                 continuation])) tl continuation in
          let hd_xref= get_xref hd in
-         P.Mtable([None,"align","baseline 1"; None,"equalrows","false";
-           None,"columnalign","left"],
-             [P.Mtr([Some "helm", "xref", "ce_"^hd_xref],
-               [P.Mtd ([],ce2pres hd)]);
-             P.Mtr([],[P.Mtd ([], continuation')])])
+         B.V([],
+             [B.H([Some "helm", "xref", "ce_"^hd_xref],
+               [ce2pres hd]);
+             continuation'])
          
   and ce2pres =
-    let module P = Mpresentation in
     let module Con = Content in
       function
         `Declaration d -> 
           (match d.Con.dec_name with
               Some s ->
                 let ty = term2pres d.Con.dec_type in
-                P.Mrow ([],
-                  [P.Mtext([None,"mathcolor","Red"],"Assume");
-                   P.Mspace([None,"width","0.1cm"]);
-                   P.Mi([],s);
-                   P.Mtext([],":");
+                B.H ([],
+                  [(B.b_kw "Assume");
+                   B.b_space;
+                   B.Object ([], P.Mi([],s));
+                   B.Text([],":");
                    ty])
             | None -> 
                 prerr_endline "NO NAME!!"; assert false)
@@ -303,13 +277,13 @@ and proof2pres term2pres p =
           (match h.Con.dec_name with
               Some s ->
                 let ty = term2pres h.Con.dec_type in
-                P.Mrow ([],
-                  [P.Mtext([None,"mathcolor","Red"],"Suppose");
-                   P.Mspace([None,"width","0.1cm"]);
-                   P.Mo([],"(");
-                   P.Mi ([],s);
-                   P.Mo([],")");
-                   P.Mspace([None,"width","0.1cm"]);
+                B.H ([],
+                  [(B.b_kw "Suppose");
+                   B.b_space;
+                   B.Text([],"(");
+                   B.Object ([], P.Mi ([],s));
+                   B.Text([],")");
+                   B.b_space;
                    ty])
             | None -> 
                 prerr_endline "NO NAME!!"; assert false) 
@@ -319,30 +293,28 @@ and proof2pres term2pres p =
            (match d.Con.def_name with
               Some s ->
                 let term = term2pres d.Con.def_term in
-                P.Mrow ([],
-                  [P.Mtext([],"Let ");
-                   P.Mi([],s);
-                   P.Mtext([]," = ");
+                B.H ([],
+                  [B.Text([],"Let ");
+                   B.Object ([], P.Mi([],s));
+                   B.Text([]," = ");
                    term])
             | None -> 
                 prerr_endline "NO NAME!!"; assert false) 
       | `Joint ho -> 
-            P.Mtext ([],"jointdef")
+            B.Text ([],"jointdef")
 
   and acontext2pres ac continuation indent =
     let module Con = Content in
-    let module P = Mpresentation in
     List.fold_right
       (fun p continuation ->
          let hd = 
            if indent then
-             P.indented (proof2pres p)
+             B.indent (proof2pres p)
            else 
              proof2pres p in
-         P.Mtable([None,"align","baseline 1"; None,"equalrows","false";
-          None,"columnalign","left"; Some "helm","xref",p.Con.proof_id],
-           [P.Mtr([Some "helm","xref","ace_"^p.Con.proof_id],[P.Mtd ([],hd)]);
-            P.Mtr([],[P.Mtd ([], continuation)])])) ac continuation 
+         B.V([Some "helm","xref",p.Con.proof_id],
+           [B.H([Some "helm","xref","ace_"^p.Con.proof_id],[hd]);
+            continuation])) ac continuation 
 
   and conclude2pres conclude indent omit_conclusion =
     let module Con = Content in
@@ -368,16 +340,13 @@ and proof2pres term2pres p =
               if conclude.Con.conclude_method = "TD_Conversion" then
                  make_concl "that is equivalent to" concl 
               else make_concl "we conclude" concl in
-            P.Mtable ([None,"align","baseline 1"; None,"equalrows","false";
-              None,"columnalign","left"],
-                [P.Mtr ([],[P.Mtd ([],conclude_body)]);
-                 P.Mtr ([],[P.Mtd ([],ann_concl)])])
+            B.V ([], [conclude_body; ann_concl])
       | _ -> conclude_aux conclude in
     if indent then 
-      P.indented (P.Mrow ([Some "helm", "xref", conclude.Con.conclude_id],
+      B.indent (B.H ([Some "helm", "xref", conclude.Con.conclude_id],
                     [tconclude_body]))
     else 
-      P.Mrow ([Some "helm", "xref", conclude.Con.conclude_id],[tconclude_body])
+      B.H ([Some "helm", "xref", conclude.Con.conclude_id],[tconclude_body])
 
 
   and conclude_aux conclude =
@@ -386,7 +355,7 @@ and proof2pres term2pres p =
     if conclude.Con.conclude_method = "TD_Conversion" then
       let expected = 
         (match conclude.Con.conclude_conclusion with 
-           None -> P.Mtext([],"NO EXPECTED!!!")
+           None -> B.Text([],"NO EXPECTED!!!")
          | Some c -> term2pres c) in
       let subproof = 
         (match conclude.Con.conclude_args with
@@ -394,13 +363,13 @@ and proof2pres term2pres p =
          | _ -> assert false) in
       let synth = 
         (match subproof.Con.proof_conclude.Con.conclude_conclusion with
-           None -> P.Mtext([],"NO SYNTH!!!")
+           None -> B.Text([],"NO SYNTH!!!")
          | Some c -> (term2pres c)) in
-      P.Mtable 
-        ([None,"align","baseline 1"; None,"equalrows","false"; None,"columnalign","left"],
-        [P.Mtr([],[P.Mtd([],make_concl "we must prove" expected)]);
-         P.Mtr([],[P.Mtd([],make_concl "or equivalently" synth)]);
-         P.Mtr([],[P.Mtd([],proof2pres subproof)])])
+      B.V 
+        ([],
+        [make_concl "we must prove" expected;
+         make_concl "or equivalently" synth;
+         proof2pres subproof])
     else if conclude.Con.conclude_method = "BU_Conversion" then
       assert false
     else if conclude.Con.conclude_method = "Exact" then
@@ -410,11 +379,10 @@ and proof2pres term2pres p =
          | _ -> assert false) in
       (match conclude.Con.conclude_conclusion with 
          None ->
-          p_mrow []
-           [p_mtext [None, "mathcolor", "red"] "Consider" ; P.smallskip; arg]
+          B.b_h [] [B.b_kw "Consider"; B.b_space; arg]
        | Some c -> let conclusion = term2pres c in
           make_row 
-            [arg; P.Mspace([None,"width","0.1cm"]);P.Mtext([],"proves")]
+            [arg; B.b_space; B.Text([],"proves")]
             conclusion
        )
     else if conclude.Con.conclude_method = "Intros+LetTac" then
@@ -424,15 +392,15 @@ and proof2pres term2pres p =
 (* OLD CODE 
       let conclusion = 
       (match conclude.Con.conclude_conclusion with 
-         None -> P.Mtext([],"NO Conclusion!!!")
+         None -> B.Text([],"NO Conclusion!!!")
        | Some c -> term2pres c) in
       (match conclude.Con.conclude_args with
          [Con.ArgProof p] -> 
-           P.Mtable 
+           B.V 
             ([None,"align","baseline 1"; None,"equalrows","false";
               None,"columnalign","left"],
-              [P.Mtr([],[P.Mtd([],proof2pres p)]);
-               P.Mtr([],[P.Mtd([],
+              [B.H([],[B.Object([],proof2pres p)]);
+               B.H([],[B.Object([],
                 (make_concl "we proved 1" conclusion))])]);
        | _ -> assert false)
 *)
@@ -459,62 +427,52 @@ and proof2pres term2pres p =
         (match List.nth conclude.Con.conclude_args 5 with
            Con.Term t -> term2pres t
          | _ -> assert false) in
-      P.Mtable ([None,"align","baseline 1";None,"equalrows","false";
-        None,"columnalign","left"], 
-         [P.Mtr ([],[P.Mtd ([],P.Mrow([],[
-          P.Mtext([None,"mathcolor","Red"],"rewrite");
-          P.Mspace([None,"width","0.1cm"]);term1;
-          P.Mspace([None,"width","0.1cm"]);
-          P.Mtext([None,"mathcolor","Red"],"with");
-          P.Mspace([None,"width","0.1cm"]);term2]))]);
-          P.Mtr ([],[P.Mtd ([],P.indented justif)])]);
+      B.V ([], 
+         [B.H ([],[
+          (B.b_kw "rewrite");
+          B.b_space; term1;
+          B.b_space; (B.b_kw "with");
+          B.b_space; term2;
+          B.indent justif])])
     else if conclude.Con.conclude_method = "Apply" then
       let pres_args = 
         make_args_for_apply term2pres conclude.Con.conclude_args in
-      P.Mrow([],
-        P.Mtext([None,"mathcolor","Red"],"by")::
-        P.Mspace([None,"width","0.1cm"])::
-        P.Mo([],"(")::pres_args@[P.Mo([],")")])
+      B.H([],
+        (B.b_kw "by")::
+        B.b_space::
+        B.Text([],"(")::pres_args@[B.Text([],")")])
     else 
-      P.Mtable 
-        ([None,"align","baseline 1"; None,"equalrows","false"; None,"columnalign","left"],
-         [P.Mtr ([],[P.Mtd ([],P.Mtext([],"Apply method" ^ conclude.Con.conclude_method ^ " to"))]);
-          P.Mtr ([],
-           [P.Mtd ([], 
-             (P.indented 
-               (P.Mtable 
-                 ([None,"align","baseline 1"; None,"equalrows","false";
-                   None,"columnalign","left"],
-                  args2pres conclude.Con.conclude_args))))])]) 
+      B.V 
+        ([],
+         [B.Text([],"Apply method" ^ conclude.Con.conclude_method ^ " to");
+          (B.indent 
+             (B.V 
+                ([],
+                 args2pres conclude.Con.conclude_args)))]) 
 
-  and args2pres l =
-    let module P = Mpresentation in
-    List.map 
-     (function a -> P.Mtr ([], [P.Mtd ([], arg2pres a)])) l
+  and args2pres l = List.map arg2pres l
 
   and arg2pres =
-    let module P = Mpresentation in
     let module Con = Content in
     function
         Con.Aux n -> 
-          P.Mtext ([],"aux " ^ n)
+          B.Text ([],"aux " ^ n)
       | Con.Premise prem -> 
-          P.Mtext ([],"premise")
+          B.Text ([],"premise")
       | Con.Lemma lemma ->
-          P.Mtext ([],"lemma")
+          B.Text ([],"lemma")
       | Con.Term t -> 
           term2pres t
       | Con.ArgProof p ->
         proof2pres p 
       | Con.ArgMethod s -> 
-         P.Mtext ([],"method") 
+         B.Text ([],"method") 
  
    and case conclude =
-     let module P = Mpresentation in
      let module Con = Content in
      let proof_conclusion = 
        (match conclude.Con.conclude_conclusion with
-          None -> P.Mtext([],"No conclusion???")
+          None -> B.Text([],"No conclusion???")
         | Some t -> term2pres t) in
      let arg,args_for_cases = 
        (match conclude.Con.conclude_args with
@@ -525,34 +483,30 @@ and proof2pres term2pres p =
        let case_arg = 
          (match arg with
             Con.Aux n -> 
-              P.Mtext ([],"an aux???")
+              B.Text ([],"an aux???")
            | Con.Premise prem ->
               (match prem.Con.premise_binder with
-                 None -> P.Mtext ([],"the previous result")
-               | Some n -> P.Mi([],n))
-           | Con.Lemma lemma -> P.Mi([],lemma.Con.lemma_name)
+                 None -> B.Text ([],"the previous result")
+               | Some n -> B.Object ([], P.Mi([],n)))
+           | Con.Lemma lemma -> B.Object ([], P.Mi([],lemma.Con.lemma_name))
            | Con.Term t -> 
                term2pres t
            | Con.ArgProof p ->
-               P.Mtext ([],"a proof???")
+               B.Text ([],"a proof???")
            | Con.ArgMethod s -> 
-               P.Mtext ([],"a method???")) in
+               B.Text ([],"a method???")) in
         (make_concl "we proceede by cases on" case_arg) in
      let to_prove =
         (make_concl "to prove" proof_conclusion) in
-     P.Mtable 
-       ([None,"align","baseline 1"; None,"equalrows","false"; 
-         None,"columnalign","left"],
-          P.Mtr ([],[P.Mtd ([],case_on)])::
-          P.Mtr ([],[P.Mtd ([],to_prove)])::
-          (make_cases args_for_cases))
+     B.V 
+       ([],
+          case_on::to_prove::(make_cases args_for_cases))
 
    and byinduction conclude =
-     let module P = Mpresentation in
      let module Con = Content in
      let proof_conclusion = 
        (match conclude.Con.conclude_conclusion with
-          None -> P.Mtext([],"No conclusion???")
+          None -> B.Text([],"No conclusion???")
         | Some t -> term2pres t) in
      let inductive_arg,args_for_cases = 
        (match conclude.Con.conclude_args with
@@ -565,42 +519,36 @@ and proof2pres term2pres p =
        let arg = 
          (match inductive_arg with
             Con.Aux n -> 
-              P.Mtext ([],"an aux???")
+              B.Text ([],"an aux???")
            | Con.Premise prem ->
               (match prem.Con.premise_binder with
-                 None -> P.Mtext ([],"the previous result")
-               | Some n -> P.Mi([],n))
-           | Con.Lemma lemma -> P.Mi([],lemma.Con.lemma_name)
+                 None -> B.Text ([],"the previous result")
+               | Some n -> B.Object ([], P.Mi([],n)))
+           | Con.Lemma lemma -> B.Object ([], P.Mi([],lemma.Con.lemma_name))
            | Con.Term t -> 
                term2pres t
            | Con.ArgProof p ->
-               P.Mtext ([],"a proof???")
+               B.Text ([],"a proof???")
            | Con.ArgMethod s -> 
-               P.Mtext ([],"a method???")) in
+               B.Text ([],"a method???")) in
         (make_concl "we proceede by induction on" arg) in
      let to_prove =
         (make_concl "to prove" proof_conclusion) in
-     P.Mtable 
-       ([None,"align","baseline 1"; None,"equalrows","false"; 
-         None,"columnalign","left"],
-          P.Mtr ([],[P.Mtd ([],induction_on)])::
-          P.Mtr ([],[P.Mtd ([],to_prove)])::
+     B.V 
+       ([],
+          induction_on::to_prove::
           (make_cases args_for_cases))
 
-    and make_cases args_for_cases =
-    let module P = Mpresentation in
-    List.map 
-      (fun p -> P.Mtr ([],[P.Mtd ([],make_case p)])) args_for_cases
+    and make_cases l = List.map make_case l
 
     and make_case =  
-      let module P = Mpresentation in
       let module Con = Content in
       function 
         Con.ArgProof p ->
           let name =
             (match p.Con.proof_name with
-               None -> P.Mtext([],"no name for case!!")
-             | Some n -> P.Mi([],n)) in
+               None -> B.Text([],"no name for case!!")
+             | Some n -> B.Object ([], P.Mi([],n))) in
           let indhyps,args =
              List.partition 
                (function
@@ -617,31 +565,28 @@ and proof2pres term2pres p =
                            (match h.Con.dec_name with
                               None -> "NO NAME???"
                            | Some n ->n) in
-                         [P.Mspace([None,"width","0.1cm"]);
-                          P.Mi ([],name);
-                          P.Mtext([],":");
+                         [B.b_space;
+                          B.Object ([], P.Mi ([],name));
+                          B.Text([],":");
                           (term2pres h.Con.dec_type)]
-                     | _ -> [P.Mtext ([],"???")]) in
+                     | _ -> [B.Text ([],"???")]) in
                   dec@p) args [] in
           let pattern = 
-            P.Mtr ([],[P.Mtd ([],P.Mrow([],
-               P.Mtext([],"Case")::P.Mspace([None,"width","0.1cm"])::name::pattern_aux@
-                [P.Mspace([None,"width","0.1cm"]);
-                 P.Mtext([],"->")]))]) in
+            B.H ([],
+               (B.Text([],"Case")::B.b_space::name::pattern_aux)@
+                [B.b_space;
+                 B.Text([],"->")]) in
           let subconcl = 
             (match p.Con.proof_conclude.Con.conclude_conclusion with
-               None -> P.Mtext([],"No conclusion!!!") 
+               None -> B.Text([],"No conclusion!!!") 
              | Some t -> term2pres t) in
-          let asubconcl =
-             P.Mtr([],[P.Mtd([],
-              P.indented (make_concl "the thesis becomes" subconcl))]) in
+          let asubconcl = B.indent (make_concl "the thesis becomes" subconcl) in
           let induction_hypothesis = 
             (match indhyps with
               [] -> []
             | _ -> 
                let text =
-                 P.Mtr([],[P.Mtd([], P.indented 
-                 (P.Mtext([],"by induction hypothesis we know:")))]) in
+                 B.indent (B.Text([],"by induction hypothesis we know:")) in
                let make_hyp =
                  function 
                    `Hypothesis h ->
@@ -649,17 +594,14 @@ and proof2pres term2pres p =
                        (match h.Con.dec_name with
                           None -> "no name"
                         | Some s -> s) in
-                     P.indented (P.Mrow ([],
-                       [P.Mo([],"(");
-                        P.Mi ([],name);
-                        P.Mo([],")");
-                        P.Mspace([None,"width","0.1cm"]);
+                     B.indent (B.H ([],
+                       [B.Text([],"(");
+                        B.Object ([], P.Mi ([],name));
+                        B.Text([],")");
+                        B.b_space;
                         term2pres h.Con.dec_type]))
                    | _ -> assert false in
-               let hyps = 
-                 List.map 
-                   (function ce -> P.Mtr ([], [P.Mtd ([], make_hyp ce)])) 
-                    indhyps in
+               let hyps = List.map make_hyp indhyps in
                text::hyps) in          
           (* let acontext = 
                acontext2pres_old p.Con.proof_apply_context true in *)
@@ -670,16 +612,13 @@ and proof2pres term2pres p =
                [] -> p.Con.proof_conclude.Con.conclude_id
              | {Con.proof_id = id}::_ -> id
            in
-            P.Maction([None,"actiontype","toggle" ; None,"selection","1"],
-              [P.indented
-               (P.Mtext
-                 ([None,"mathcolor","Red" ;
+            B.Action([None,"type","toggle"],
+              [B.indent
+               (B.Text
+                 ([None,"color","red" ;
                    Some "helm", "xref", acontext_id],"Proof")) ;
                acontext2pres p.Con.proof_apply_context body true]) in
-          P.Mtable ([None,"align","baseline 1"; None,"equalrows","false";
-             None,"columnalign","left"],
-             pattern::asubconcl::induction_hypothesis@
-              [P.Mtr([],[P.Mtd([],presacontext)])])
+          B.V ([], pattern::asubconcl::induction_hypothesis@[presacontext])
        | _ -> assert false 
 
      and falseind conclude =
@@ -687,7 +626,7 @@ and proof2pres term2pres p =
        let module Con = Content in
        let proof_conclusion = 
          (match conclude.Con.conclude_conclusion with
-            None -> P.Mtext([],"No conclusion???")
+            None -> B.Text([],"No conclusion???")
           | Some t -> term2pres t) in
        let case_arg = 
          (match conclude.Con.conclude_args with
@@ -701,11 +640,11 @@ and proof2pres term2pres p =
              Con.Aux n -> assert false
            | Con.Premise prem ->
               (match prem.Con.premise_binder with
-                 None -> [P.Mtext([],"Contradiction, hence")]
+                 None -> [B.Text([],"Contradiction, hence")]
                | Some n -> 
-                  [P.Mi([],n);P.smallskip;P.Mtext([],"is contradictory, hence")])
+                  [B.Object ([],P.Mi([],n)); B.skip;B.Text([],"is contradictory, hence")])
            | Con.Lemma lemma -> 
-               [P.Mi([],lemma.Con.lemma_name);P.smallskip;P.Mtext([],"is contradictory, hence")]
+               [B.Object ([], P.Mi([],lemma.Con.lemma_name)); B.skip; B.Text([],"is contradictory, hence")]
            | _ -> assert false) in
             (* let body = proof2pres {proof with Con.proof_context = tl} in *)
        make_row arg proof_conclusion
@@ -715,7 +654,7 @@ and proof2pres term2pres p =
        let module Con = Content in
        let proof_conclusion = 
          (match conclude.Con.conclude_conclusion with
-            None -> P.Mtext([],"No conclusion???")
+            None -> B.Text([],"No conclusion???")
           | Some t -> term2pres t) in
        let proof,case_arg = 
          (match conclude.Con.conclude_args with
@@ -730,9 +669,9 @@ and proof2pres term2pres p =
            | Con.Premise prem ->
               (match prem.Con.premise_binder with
                  None -> []
-               | Some n -> [P.Mtext([],"by");P.smallskip;P.Mi([],n)])
+               | Some n -> [(B.b_kw "by"); B.b_space; B.Object([], P.Mi([],n))])
            | Con.Lemma lemma -> 
-               [P.Mtext([],"by");P.smallskip;P.Mi([],lemma.Con.lemma_name)]
+               [(B.b_kw "by");B.skip; B.Object([], P.Mi([],lemma.Con.lemma_name))]
            | _ -> assert false) in
        match proof.Con.proof_context with
          `Hypothesis hyp1::`Hypothesis hyp2::tl ->
@@ -741,32 +680,30 @@ and proof2pres term2pres p =
                 None -> "_"
               | Some s -> s) in
             let preshyp1 = 
-              P.Mrow ([],
-               [P.Mtext([],"(");
-                P.Mi([],get_name hyp1);
-                P.Mtext([],")");
-                P.smallskip;
+              B.H ([],
+               [B.Text([],"(");
+                B.Object ([], P.Mi([],get_name hyp1));
+                B.Text([],")");
+                B.skip;
                 term2pres hyp1.Con.dec_type]) in
             let preshyp2 = 
-              P.Mrow ([],
-               [P.Mtext([],"(");
-                P.Mi([],get_name hyp2);
-                P.Mtext([],")");
-                P.smallskip;
+              B.H ([],
+               [B.Text([],"(");
+                B.Object ([], P.Mi([],get_name hyp2));
+                B.Text([],")");
+                B.skip;
                 term2pres hyp2.Con.dec_type]) in
             (* let body = proof2pres {proof with Con.proof_context = tl} in *)
             let body = conclude2pres proof.Con.proof_conclude false true in
             let presacontext = 
               acontext2pres proof.Con.proof_apply_context body false in
-            P.Mtable 
-              ([None,"align","baseline 1"; None,"equalrows","false"; 
-                None,"columnalign","left"],
-               [P.Mtr ([],[P.Mtd ([],
-                 P.Mrow([],arg@[P.smallskip;P.Mtext([],"we have")]))]);
-                P.Mtr ([],[P.Mtd ([],preshyp1)]);
-                P.Mtr ([],[P.Mtd ([],P.Mtext([],"and"))]);
-                P.Mtr ([],[P.Mtd ([],preshyp2)]);
-                P.Mtr ([],[P.Mtd ([],presacontext)])]);
+            B.V 
+              ([],
+               [B.H ([],arg@[B.skip; B.Text([],"we have")]);
+                preshyp1;
+                B.Text([],"and");
+                preshyp2;
+                presacontext]);
          | _ -> assert false
 
      and exists conclude =
@@ -774,7 +711,7 @@ and proof2pres term2pres p =
        let module Con = Content in
        let proof_conclusion = 
          (match conclude.Con.conclude_conclusion with
-            None -> P.Mtext([],"No conclusion???")
+            None -> B.Text([],"No conclusion???")
           | Some t -> term2pres t) in
        let proof = 
          (match conclude.Con.conclude_args with
@@ -791,30 +728,29 @@ and proof2pres term2pres p =
                 None -> "_"
               | Some s -> s) in
            let presdecl = 
-             P.Mrow ([],
-               [P.Mtext([None,"mathcolor","Red"],"let");
-                P.smallskip;
-                P.Mi([],get_name decl);
-                P.Mtext([],":"); term2pres decl.Con.dec_type]) in
+             B.H ([],
+               [(B.b_kw "let");
+                B.skip;
+                B.Object ([], P.Mi([],get_name decl));
+                B.Text([],":"); term2pres decl.Con.dec_type]) in
            let suchthat =
-             P.Mrow ([],
-               [P.Mtext([None,"mathcolor","Red"],"such that");
-                P.smallskip;
-                P.Mtext([],"(");
-                P.Mi([],get_name hyp);
-                P.Mtext([],")");
-                P.smallskip;
+             B.H ([],
+               [(B.b_kw "such that");
+                B.skip;
+                B.Text([],"(");
+                B.Object ([], P.Mi([],get_name hyp));
+                B.Text([],")");
+                B.skip;
                 term2pres hyp.Con.dec_type]) in
             (* let body = proof2pres {proof with Con.proof_context = tl} in *)
             let body = conclude2pres proof.Con.proof_conclude false true in
             let presacontext = 
               acontext2pres proof.Con.proof_apply_context body false in
-            P.Mtable 
-              ([None,"align","baseline 1"; None,"equalrows","false"; 
-                None,"columnalign","left"],
-               [P.Mtr ([],[P.Mtd ([],presdecl)]);
-                P.Mtr ([],[P.Mtd ([],suchthat)]);
-                P.Mtr ([],[P.Mtd ([],presacontext)])]);
+            B.V 
+              ([],
+               [presdecl;
+                suchthat;
+                presacontext]);
          | _ -> assert false in
 
 proof2pres p
@@ -822,116 +758,86 @@ proof2pres p
 
 exception ToDo;;
 
+let aaa = ref 0
+
 let content2pres term2pres (id,params,metasenv,obj) =
- let module K = Content in
- let module P = Mpresentation in
-  match obj with
-     `Def (K.Const,thesis,`Proof p) ->
-       p_mtable
-        [None,"align","baseline 1";
-         None,"equalrows","false";
-         None,"columnalign","left";
-         None,"helm:xref","id"]
-        ([p_mtr []
-           [p_mtd []
-            (p_mrow []
-             [p_mtext []
-               ("UNFINISHED PROOF" ^ id ^"(" ^
-                 String.concat " ; " (List.map UriManager.string_of_uri params)^
-                ")")])] ;
-         p_mtr []
-          [p_mtd []
-            (p_mrow []
-              [p_mtext [] "THESIS:"])] ;
-         p_mtr []
-          [p_mtd []
-            (p_mrow []
-              [p_mphantom []
-                (p_mtext [] "__") ;
-              term2pres thesis])]] @
-         (match metasenv with
-             None -> []
-           | Some metasenv' ->
-              [p_mtr []
-                [p_mtd []
-                  (* Conjectures are in their own table to make *)
-                  (* diffing the DOM trees easier.              *)
-                  (p_mtable
-                    [None,"align","baseline 1";
-                     None,"equalrows","false";
-                     None,"columnalign","left"]
-                   ((p_mtr []
-                      [p_mtd []
-                       (p_mrow []
-                         [p_mtext [] "CONJECTURES:"])])::
-                    List.map
-                     (function
-                       (id,n,context,ty) ->
-                         p_mtr []
-                          [p_mtd []
-                           (p_mrow [Some "helm", "xref", id]
-                             (List.map
-                               (function
-                                   None ->
-                                     p_mrow []
-                                      [ p_mi [] "_" ;
-                                        p_mo [] ":?" ;
-                                        p_mi [] "_"]
-                                 | Some (`Declaration d)
-                                 | Some (`Hypothesis d) ->
-                                    let
-                                     { K.dec_name = dec_name ;
-                                       K.dec_type = ty } = d
-                                     in
-                                      p_mrow []
-                                       [ p_mi []
-                                          (match dec_name with
-                                              None -> "_"
-                                            | Some n -> n) ;
-                                         p_mo [] ":" ;
-                                         term2pres ty]
-                                 | Some (`Definition d) ->
-                                    let
-                                     { K.def_name = def_name ;
-                                       K.def_term = bo } = d
-                                     in
-                                      p_mrow []
-                                       [ p_mi []
-                                          (match def_name with
-                                              None -> "_"
-                                            | Some n -> n) ;
-                                         p_mo [] ":=" ;
-                                         term2pres bo]
-                                 | Some (`Proof p) ->
-                                    let proof_name = p.K.proof_name in
-                                     p_mrow []
-                                      [ p_mi []
-                                         (match proof_name with
-                                             None -> "_"
-                                           | Some n -> n) ;
-                                        p_mo [] ":=" ;
-                                        proof2pres term2pres p]
-                               ) (List.rev context) @
-                             [ p_mo [] "|-" ] @
-                             [ p_mi [] (string_of_int n) ;
-                               p_mo [] ":" ;
-                               term2pres ty ]
-                           ))
-                          ]
-                     ) metasenv'
-                  ))]]
-         )  @
-        [p_mtr []
-          [p_mtd []
-            (p_mrow []
-              [proof2pres term2pres p])]])
-   | _ -> raise ToDo
+  let module K = Content in
+    match obj with
+       `Def (K.Const,thesis,`Proof p) ->
+         B.b_v
+          [None,"helm:xref","id"]
+          ([B.b_text [] ("UNFINISHED PROOF " ^ id ^"(" ^ String.concat " ; " (List.map UriManager.string_of_uri params)^ ")") ;
+            B.b_text [] "THESIS:" ;
+           B.indent (term2pres thesis)] @
+           (match metasenv with
+               None -> []
+              | Some metasenv' ->
+                    (* Conjectures are in their own table to make *)
+                    (* diffing the DOM trees easier.              *)
+                    (B.b_v []
+                       ((B.b_text [] ("CONJECTURES:" ^ (let _ = incr aaa; in (string_of_int !aaa))))::
+                       (List.map
+                         (function
+                              (id,n,context,ty) ->
+                                (B.b_h [Some "helm", "xref", id]
+                                   (((List.map
+                                        (function
+                                             None ->
+                                               B.b_h []
+                                               [ B.b_object (p_mi [] "_") ;
+                                                 B.b_object (p_mo [] ":?") ;
+                                                 B.b_object (p_mi [] "_")]
+                                           | Some (`Declaration d)
+                                           | Some (`Hypothesis d) ->
+                                               let
+                                                 { K.dec_name = dec_name ;
+                                                   K.dec_type = ty } = d
+                                               in
+                                                 B.b_h []
+                                                   [ B.b_object (p_mi []
+                                                                    (match dec_name with
+                                                                         None -> "_"
+                                                                       | Some n -> n)) ;
+                                                     B.b_text [] ":" ;
+                                                     term2pres ty]
+                                           | Some (`Definition d) ->
+                                               let
+                                                 { K.def_name = def_name ;
+                                                   K.def_term = bo } = d
+                                               in
+                                                 B.b_h []
+                                                   [ B.b_object (p_mi []
+                                                                    (match def_name with
+                                                                         None -> "_"
+                                                                       | Some n -> n)) ;
+                                                     B.b_text [] ":=" ;
+                                                     term2pres bo]
+                                           | Some (`Proof p) ->
+                                               let proof_name = p.K.proof_name in
+                                                 B.b_h []
+                                                   [ B.b_object (p_mi []
+                                                                    (match proof_name with
+                                                                         None -> "_"
+                                                                       | Some n -> n)) ;
+                                                     B.b_text [] ":=" ;
+                                                     proof2pres term2pres p]
+                                        ) (List.rev context)) @
+                                     [ B.b_text [] "|-" ;
+                                       B.b_object (p_mi [] (string_of_int n)) ;
+                                       B.b_text [] ":" ;
+                                       term2pres ty ])
+                                   ))
+                         ) metasenv'))
+                    )::[proof2pres term2pres p]
+          )
+         )
+      | _ -> raise ToDo
 ;;
 
 let content2pres ~ids_to_inner_sorts =
  content2pres 
   (function p -> 
-   (Cexpr2pres.cexpr2pres_charcount 
-    (Content_expressions.acic2cexpr ids_to_inner_sorts p)))
+     (Cexpr2pres.cexpr2pres_charcount 
+                   (Content_expressions.acic2cexpr ids_to_inner_sorts p)))
 ;;