Documentation of QTextEdit::tabStopWidth does not say in which unit the tabs are measured. The Qt 3 doc says it is pixels

I tried implementing a sourcecode editor. I want to have my text indented using tabs that are 4 spaces wide.

I searched the documentation for a way to adjust the tabstop and found QTextEdit::tabStopWidth. The documentation says that this property has the magic value "80" assigned to it. After some tests, I found out that this is not 80 chars.

Looking into the Qt3 documentation, it says that this are 80 PIXELS.

Please state in the Qt4 documentation that the unit of this property is pixels if this is still the case.