Create rich command line applications, with colors, headings, lists, alerts, progress bars, etc. It uses CSS for theming.
See themes for theming, containers for container elements, inline-markup for more about command substitution and inline markup.
See also the various CLI elements:
Text elements: cli_text(), cli_verbatim(), cli_h1().
Alerts: cli_alert().
Progress bars: cli_progress_bar().
Useful links: