rapwiki:

Symbols

MoinMoin also supports some graphical symbols, like the so called smileys that frequently appear in e-mails and chats:

Markup Display Markup Display Markup Display Markup Display
X-( X-( :D :D <:( <:( :o :o
:( :( :) :) B) B) :)) :))
;) ;) /!\ /!\ <!> <!> (!) (!)
:-? :-? :\ :\ >:> >:> |) |)
:-( :-( :-) :-) B-) B-) :-)) :-))
;-) ;-) |-) |-) (./) (./) {OK} {OK}
{X} {X} {i} {i} {1} {1} {2} {2}
{3} {3} {*} {*} {o} {o}    

For more see HelpOnSmileys.