### Triage
+- [ ] There is a "window:close" and a "Window:close" and they are
+ different. Fix this!
- [X] unknown keysequence should be reported so e.g. if keyboard
is is Greek mode, then I will be told that Cx-b doesn't work
- [X] menubar doesn't redraw background when resized wider.
- [X] split range management out of autospell so it can be used by other
modules.
- [ ] make it easy for a make-search command to search backwards
-- [ ] Make a start on CUA mode with mouse/menu/selection support.
+- [X] Make a start on CUA mode with mouse/menu/selection support.
Also Function keys: help, close, refresh
### Large