name: math ensuremath
<object tal:omit-tag="not:self/renderer/vectorImager/enabled" type="image/svg+xml" 
        tal:attributes="data self/vectorImage/url; style string:width:${self/vectorImage/width/em};; 
                                                                height:${self/vectorImage/height/em};; 
                                                                vertical-align:${self/vectorImage/depth/em}"><img 
        tal:attributes="src self/image/url; alt self/source; 
                        style string:vertical-align:${self/image/depth/em};; 
                                     width:${self/image/width/em};; 
                                     height:${self/image/height/em}" class="math gen" /></object>

name: displaymath equation equation*
<table class="equation" width="100%" tal:attributes="id self/id" cellspacing="0" cellpadding="0">
<tr>
    <td tal:condition="self/ownerDocument/context/packages/documentclass/fleqn" class="fleqn"></td>
    <td tal:condition="not:self/ownerDocument/context/packages/documentclass/fleqn" style="width:40%"></td>
    <td><object tal:omit-tag="not:self/renderer/vectorImager/enabled" type="image/svg+xml" 
            tal:attributes="data self/vectorImage/url; style string:width:${self/vectorImage/width/em};; 
                                                                    height:${self/vectorImage/height/em}"><img 
            tal:attributes="src self/image/url; alt self/source; 
                            style string:width:${self/image/width/em};; 
                            height:${self/image/height/em}" class="math gen" /></object></td>
    <td tal:condition="self/ownerDocument/context/packages/documentclass/fleqn" style="width:80%"></td>
    <td tal:condition="not:self/ownerDocument/context/packages/documentclass/fleqn" style="width:40%"></td>
    <td class="eqnnum" style="width:20%"><span tal:condition="self/ref">(<span tal:content="self/ref">1.1.1</span>)</span></td>
</tr>
</table>

name: eqnarray eqnarray* align align* gather gather* falign falign* \
      multiline multiline* alignat alignat* split
type: xml
<table class="eqnarray" cellspacing="0" cellpadding="0" width="100%"
       tal:attributes="id self/id">
<tr tal:repeat="row self" tal:attributes="id row/id">
    <td tal:condition="self/ownerDocument/context/packages/documentclass/fleqn" class="fleqn"></td>
    <td tal:condition="not:self/ownerDocument/context/packages/documentclass/fleqn" style="width:40%"></td>
    <metal:block tal:repeat="cell row">
    <metal:block tal:define="alignment 
           python:test(cell.style.get('text-align'), cell.style.get('text-align'),
                       path('repeat/cell/start'), 'right', 
                       path('repeat/cell/end'), 'left', 'center')">
        <td tal:attributes="style string:vertical-align:middle;; 
                                  text-align:${alignment}; colspan cell/attributes/colspan"><object 
            tal:omit-tag="not:self/renderer/vectorImager/enabled" type="image/svg+xml" 
            tal:attributes="data cell/vectorImage/url; style string:width:${cell/vectorImage/width/em};; 
            height:${cell/vectorImage/height/em};; vertical-align:${cell/vectorImage/depth/em}"><img 
            tal:attributes="src cell/image/url; alt cell/source; style 
            string:vertical-align:${cell/image/depth/em};; width:${cell/image/width/em};; 
                   height:${cell/image/height/em}" class="math gen" /></object></td>
    </metal:block>
    </metal:block>
    <td tal:condition="self/ownerDocument/context/packages/documentclass/fleqn" style="width:80%"></td>
    <td tal:condition="not:self/ownerDocument/context/packages/documentclass/fleqn" style="width:40%"></td>
    <td class="eqnnum" style="width:10%"><span tal:condition="row/ref">(<span tal:content="row/ref">1.1.1</span>)</span></td>
</tr>
</table>