I know of 4 commands I can use in Vim's insert mode.
C-ddelete one 'shiftwidth' worth of indent
C-tadd one 'shiftwidth' worth of indent
C-Obegin a quick command.
My results from googling have been saturated with answers on how to switch from insert mode to normal mode.
The page for
:help <C-d> and the other insert mode commands is not what I'm looking for, it's always just the keystroke. How do I search for the specific commands available in insert mode? I don't know how to look it up...
More generally, how do I look up commands specific to a single mode?