Q:

Inkscape: After combining paths, specify which one is inside and outside

So, I am hand-tracing a logo in Inkscape, one of the letters is a B. My problem is, when I combine the 3 paths of the B and setting a fill color, Inkscape also fills the lower hole, which it shouldn't. What can I do to make inkscape treat my B like it should?

A:

If you've combined all your paths into one, try this. 

Go to the "Fill" tab of the "Fill and Stroke" dialog. At the top right of the Fill tab is "Fill rule". Set this to "evenodd" (the one on the left). I'm guessing this will do it. 

Or, if your paths are still separate: 

Select all paths
Choose "Path" > "Exclusion"

