Hi Tom,

> Is it also possible to change the thickness of the selected yellow lines (curves / edges) ?
> I searched through the CSS file but not sure where ;-)

Selected lines are automatically set to be 2 pixels wider than regular lines. So you can't set it directly but if you adjust the regular display line width it will follow along with that.

The regular line width can be set in moi.ini (go to Options > General > "Edit .ini file" button, then under the [View] section you'll find:

[View]
.....
LineWidth=1.0


- Michael