Square/tl
From xat wiki
(SQUARE) - Mga smilies na hugis parisukat
Give a square shape to any regular smiley. To make a cyan square smiley add #s at the end of a smiley code e.g (smile#s). If you have colour powers you can change the colour. For purple use: (biggrin#s#800080).
NOTE: Only works with smilies in brackets.