@SYNTAX:hilight@

   -mask: Match only for nick, <text> is a nick mask
   -regexp: <text> is a regular expression
   -word: <text> must match to full words
   -nick: Hilight only the nick, not the whole line (default)
   -nonick: Hilight the whole line with the hilight color.
   -color: Print the message with <color>. color is in %code format
           (see docs/formats.txt)
   -level: Match only for <level> messages, default is
           publics,msgs,notices,actions
   -channels: Match only in <channels>

Examples:

Hilight lines that have "mynick" word:
  /HILIGHT mynick

Hilight lines that were written by nicks from *.fi with bold green
  /HILIGHT -color %G -mask *!*@*.fi

For regular expressions, see `man 7 regex`.

See also: DEHILIGHT, SET HILIGHT