# Functions
ParseNoteMode - string => NoteMode.
RegisterCommand - register command.
# Constants
CmdName - cmd name.
NoteModeForward - taking notes for forward.
NoteModeInfo - get infomation for note.
NoteModeKeys - show keys.
NoteModeNew - new note.
NoteModeNone - none.
NoteModeRemoveKeys - remove keys.
NoteModeRemoveMsg - remove msg.
NoteModeSearch - search note with key.
# Variables
ErrCmdInvalidNoteMode - invalid note mode.
ErrCmdInvalidNoteName - invalid note name.
ErrCmdInvalidParams - invalid command params.
ErrCmdNoParams - no command params.
# Type aliases
NoteMode - note mode.