Third Edit Revision Log

Inside the corresponding Shared Workbook Revision Log part is the following content:

<revisions xmlns="…" xmlns:r="…">
  <rrc rId="16" sId="1" ref="A1:XFD1" action="insertRow"/>
  <rrc rId="17" sId="1" ref="A1:A1048576" action="insertCol"/>
  <rrc rId="18" sId="1" ref="C1:C1048576" action="insertCol"/>
  <rrc rId="19" sId="1" ref="E1:E1048576" action="insertCol"/>
  <rrc rId="20" sId="1" ref="A5:XFD5" action="insertRow"/>
  <rcv guid="{34804977-BBD3-40C9-87A7-1779BEE2183C}" action="delete"/>
  <rcv guid="{34804977-BBD3-40C9-87A7-1779BEE2183C}" action="add"/>
</revisions>

<rrc> indicates a "revision to row/column". There are several row inserts and column inserts expressed here.