function delete(){
    # Requires: $NOTE, $NOTE_DIR
    # Given a valid $NOTE, delete removes $NOTE from sns.

     if [ -e "$NOTES_DIR/$NOTE" ]; then
        rm "$NOTES_DIR/$NOTE"
        printf "  - %s\n" "Deleted note: ${NOTE%.*}."
        #Cleanup empty notebooks/sections]
        find "$NOTES_DIR" -mindepth 1 -type d  | tac |\
         while read -r DIR ; do
            if [ ! "$(ls -A $DIR)" ]; then
                rmdir "$DIR"
            fi
        done
     else
        >&2 printf "  $RED_COLOR!$RESET_COLOR %s\n" "Note ${NOTE%.*} does not exist."
     fi
}