Excerpt from the "VECTORIALIMAGES" file that defines all the lines and boxes in the PDF version of the NYT Crossword from 2021-08-06.

image-1.vec

<?xml version="1.0" encoding="utf-8"?>
<!-- Excerpt from the "VECTORIALIMAGES" file that defines 
     all the lines and boxes in the PDF version of the NYT Crossword from 2021-08-06.
     One of the two files generated by pdftoxml on the file Aug0621.pdf -->
<VECTORIALIMAGES>
  <!-- This clipping region defines the page size -->
  <CLIP sid="p1_s1" x="0" y="0" width="612" height="792" idClipZone="p1_c1">
    <GROUP sid="p1_s2" closed="true">
      <M x="0" y="792" />
      <L x="612" y="792" />
      <L x="612" y="0" />
      <L x="0" y="0" />
      <L x="0" y="792" />
    </GROUP>
  </CLIP>
  <!-- and this group says to draw a box around the entire page -->
  <GROUP sid="p1_s15" style="stroke: #000000;fill:none;stroke-width: 1.07;stroke-linejoin:miter;stroke-linecap:butt;stroke-miterlimit: 10;" clipZone="p1_c1">
    <M x="21.6" y="42.52" />
    <L x="590.4" y="42.52" />
  </GROUP>

  <!-- This clipping region region defines the top leftmost box -->
  <CLIP sid="p1_s16" x="263.525" y="49.325" width="22.34" height="22.34" idClipZone="p1_c2">
    <GROUP sid="p1_s17" closed="true">
      <M x="263.525" y="71.665" />
      <L x="285.865" y="71.665" />
      <L x="285.865" y="49.325" />
      <L x="263.525" y="49.325" />
      <L x="263.525" y="71.665" />
    </GROUP>
  </CLIP>
  <!-- fill with white -->
  <GROUP sid="p1_s18" style="fill: #FFFFFF;fill-opacity: 1;" clipZone="p1_c2" closed="true">
    <M x="263.81" y="71.38" />
    <L x="285.58" y="71.38" />
    <L x="285.58" y="49.6097" />
    <L x="263.81" y="49.6097" />
    <L x="263.81" y="71.38" />
  </GROUP>
  <!-- stroke with black -->
  <GROUP sid="p1_s19" style="stroke: #000000;fill:none;stroke-width: 0.557;stroke-linejoin:miter;stroke-linecap:butt;stroke-miterlimit: 10;" clipZone="p1_c2" closed="true">
    <M x="263.81" y="71.38" />
    <L x="285.58" y="71.38" />
    <L x="285.58" y="49.6097" />
    <L x="263.81" y="49.6097" />
    <L x="263.81" y="71.38" />
  </GROUP>
  <!-- many lines skipped -->
  <!-- Heres another box that gets filled with black (see the GROUP following the CLIP) -->
  <CLIP sid="p1_s36" x="350.615" y="49.325" width="22.34" height="22.34" idClipZone="p1_c6">
    <GROUP sid="p1_s37" closed="true">
      <M x="350.615" y="71.665" />
      <L x="372.955" y="71.665" />
      <L x="372.955" y="49.325" />
      <L x="350.615" y="49.325" />
      <L x="350.615" y="71.665" />
    </GROUP>
  </CLIP>
  <!-- fill with black -->
  <GROUP sid="p1_s38" style="fill: #000000;fill-opacity: 1;" clipZone="p1_c6" closed="true">
    <M x="350.9" y="71.38" />
    <L x="372.67" y="71.38" />
    <L x="372.67" y="49.6097" />
    <L x="350.9" y="49.6097" />
    <L x="350.9" y="71.38" />
  </GROUP>
  <!-- stroke with black -->
  <GROUP sid="p1_s39" style="stroke: #000000;fill:none;stroke-width: 0.557;stroke-linejoin:miter;stroke-linecap:butt;stroke-miterlimit: 10;" clipZone="p1_c6" closed="true">
    <M x="350.9" y="71.38" />
    <L x="372.67" y="71.38" />
    <L x="372.67" y="49.6097" />
    <L x="350.9" y="49.6097" />
    <L x="350.9" y="71.38" />
  </GROUP>
  <!-- stroke with black again, for some reason? -->
  <GROUP sid="p1_s40" style="stroke: #000000;fill:none;stroke-width: 0.557;stroke-linejoin:miter;stroke-linecap:butt;stroke-miterlimit: 10;" clipZone="p1_c1" closed="true">
    <M x="350.9" y="71.38" />
    <L x="372.67" y="71.38" />
    <L x="372.67" y="49.6097" />
    <L x="350.9" y="49.6097" />
    <L x="350.9" y="71.38" />
  </GROUP>
  <!-- many more lines skipped -->
</VECTORIALIMAGES>