A `Command.t` represents the help text for a single command.

`type t````=` `{`

`keys : Keystroke.t list;`
`description : string;`

`}```
`include sig ... end`
`val t_of_sexp : Base.Sexp.t ‑> t`
`val sexp_of_t : t ‑> Base.Sexp.t`
`module Format : sig ... end`
`val view : t ‑> View_spec.t ‑> Format.t ‑> Incr_dom_widgets__.Import.Vdom.Node.t`

`view` displays a help text line for a single command. For instance, this can be used to display the help text for opening a help menu.