Our phpFox script allows BBCode for formatting. All of the following work in a forum post test.
[b][/b] [i][/i] [link][/link] [strong][/strong] [u][/u] [color=red][/color] [em][/em] [email][/email] [size=12][/size] [center][/center] [align=right][/align] [left][/left] [right][/right] [ul][/ul] [ol][/ol] [li][/li] [br][/br] [hr][/hr] [quote][/quote] [code][/code] [img][/img]