chromium/third_party/blink/web_tests/fast/table/colgroup-spanning-groups-rules.html

<TABLE BORDER=1 CELLPADDING=4 RULES=GROUPS  FRAME=BOX>

<COLGROUP></COLGROUP>
<COLGROUP SPAN=3></COLGROUP>

<TR> <TH>Weekday</TH> <TH>Date</TH>    <TH>Manager</TH> <TH>Qty</TH> </TR>
<TR> <TD>Monday</TD> <TD>09/11</TD>    <TD>Kelsey</TD> <TD>639</TD>  </TR>
<TR> <TD>Tuesday</TD> <TD>09/12</TD>   <TD>Lindsey</TD> <TD>596</TD> </TR>
<TR> <TD>Wednesday</TD> <TD>09/13</TD> <TD>Randy</TD> <TD>1135</TD>  </TR>
<TR> <TD>Thursday</TD> <TD>09/14</TD>  <TD>Susan</TD> <TD>1002</TD>  </TR>
<TR> <TD>Friday</TD> <TD>09/15</TD>    <TD>Randy</TD> <TD>908</TD>   </TR>
<TR> <TD>Saturday</TD> <TD>09/16</TD>  <TD>Lindsey</TD> <TD>371</TD> </TR>
<TR> <TD>Sunday</TD> <TD>09/17</TD>    <TD>Susan</TD> <TD>272</TD>   </TR>
</TABLE>