+ <td class="snns top italic orange">generic entrywise extension</td>
+ <td class="snns top orange">lexs ( ? ⦻*[?,?,?] ? )</td>
+ <td class="ssnn top orange">lexs_length lexs_lexs</td>
+ </tr>
+ <tr>
+ <td class="snns top capitalize italic red">syntax</td>
+ <td class="snns top italic red">append for local environments</td>
+ <td class="snns top red">append ( ? @@ ? )</td>
+ <td class="ssnn top red">append_length</td>
+ </tr>
+ <tr>
+ <td class="nnns top capitalize italic red">