gdb.info: TUI Single Key Mode

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TUI Single Key Mode

The TUI provides a _SingleKey_ mode in which it installs a particular
key binding in the readline keymaps to connect single keys to some gdb
commands.
`c'
     continue

`d'
down

`f'
     finish

`n'
next

`q'
     exit the _SingleKey_ mode.

`r'
run

`s'
step

`u'
up

`v'
     info locals
`w'
     where
   Other keys temporarily switch to the GDB command prompt.  The key
that was pressed is inserted in the editing buffer so that it is
possible to type most GDB commands without interaction with the TUI
_SingleKey_ mode.  Once the command is entered the TUI _SingleKey_ mode
is restored.  The only way to permanently leave this mode is by hitting
<q> or `<C-x> <s>'.