-8 middleclick in content == p, and if command line is open, paste there the clipboard buffer
-8 all search commands should start searching from the top of the visible viewport
-8 <C-o>/<C-i> should work as in Vim (i.e., save page positions as well as
- locations in the history list).
-8 jump to the next heading with ]h, next image ]i, previous textbox [t and so on
-7 clean up error message codes and document
-7 add search capability to MOW