UTSL is an initialism for the expression `Use The Source, Luke`, a pun on `Use the Force, Luke!`. It is similar in concept to RTFM, but is used when the only or preferred documentation is the program source. ... Found on http://en.wikipedia.org/wiki/UTSL
1) Use the source luke 
UTSL is an initialism for the expression `Use The Source, Luke`, a pun on `Use the Force, Luke!`. It is similar in concept to RTFM, but is used when the only or preferred documentation is the program source. ...