Prompt and Title

The prompt makes use of themecompat (see 6.2.5) so the lazy author don't need to rewrite the theme to work in zsh bash and ksh. Also 'color' is used to put some colors on the dull prompt.

For the title, one can notice the use of number-extra to display the number of the terminal:

PS1="$u`color fgred`@`color`$h "$w"`color fgred`$b `color`"

TITLE="terminal::$TEXTNUMBER"