Examples:

[red] - red text
[red/blue] - red text on blue background
[#1020FF/#FFFF10] - hex color codes are supported
[@text-200] - use code from current color scheme
[!] - use default color
[b]bold text[!b] - bold text
[u]underlined text[!u] - underlined text

An empty tag at the beginning of a line disables further tag processing on that line.

Color names and hex codes are the same as in HTML/CSS.