Colorize text. The reference comes from: ANSI reference sheet and full reference is vt100 spec.
(line-with-bg text color)
(move-bol-down nb-lines-down)
(move-bol-up nb-lines-up)
(move-column col)
(move-down n)
(move-left n)
(move-right n)
(move-to line column)
(move-up n)
(underline text)