unbind F4 all
# disable various ui interactions
unbind M-X all # help mode
-unbind M-C all # constant cursor
+#unbind M-C all # constant cursor
unbind M-O all # use one more line for editing
unbind M-H all # smart home
unbind M-I all # auto indent
unbind M-Q all # tab/space conversion
-unbind M-B all # backup files
+unbind M-B main # backup files
unbind M-M all # mouse
unbind M-N all # dos/mac conversion mode