QTextEdit html parsing trouble

[DpoHro]

How i can merge HTML table cells ?
When i write next code, in my HTML page:

...
<td colspan=2>
</td>
...

...
<td colspan=2>
</td>
...

To copy to clipboard, switch view to plain text mode 

or

...
<td rowspan=2>
</td>
...

...
<td rowspan=2>
</td>
...

To copy to clipboard, switch view to plain text mode 

etc

This not to have effect. :/

This feature not present in QT 4.3.2?