Q: I've got a 1 or 2 pixel gap between the right side of my terminal and the
   right side of the screen, and I want to turn it off.

A: This is due to the column-based nature of terminals. Terminals don't just
   insert space somewhere, but tell the WM they can't be resized in a certain
   way. The terminal can't use the "wasted space" anyway, so this is purely

   You can change `static const Bool resizehints = True;` to `False` in
   config.h to turn resizehints off. This wastes the same amount of  space
   inside the terminal window that would otherwise be wasted outside.

Q: Why are there gaps between my windows?

A: See the question above.

Q: How do I find out the values of the rules[] array in config.h?

A: The class, instance and title properties of an X11 window can be
   found out by issuing xprop(1). The corresponding values are:

    WM_CLASS(STRING) = instance, class
    WM_NAME(STRING) = title