Both columns should be 200px
<table bgcolor=orange border>
<colgroup span=2 width=200></colgroup>
<tr>
<td>c11</td><td>c12</td>
</tr>
</table>
<BR>
Both columns should be 200px
<table bgcolor=orange border>
<colgroup width=200>
<col span=2>
</colgroup>
<tr>
<td>c11</td><td>c12</td>
</tr>
</table>
<BR>
Both columns should be 200px
<table bgcolor=orange border>
<col width=200 span=2>
<tr>
<td>c11</td><td>c12</td>
</tr>
</table>
<BR>