Vim, How to create key bindings to: shift, ctrl, alt, cmd keys?

I want to create keybindings like with the keys: shift, ctrl, alt, cmd, but don't know what how to insert them in the configuration file:

like I know that Ctrl is represented as C, I could write: ctrl+p as <C-p>, but how would you write:

alt+p ? shift+p ? cmd+p ?

Solution

Check the help file for :h shift. Basically it will lead to:

<S-...>  shift-key                      shift <S-
<C-...>  control-key                    control ctrl <C-
<M-...>  alt-key or meta-key            meta alt <M-
<A-...>  same as <M-...>                <A-
<D-...>  command-key (Macintosh only)   <D-