1. [Usenet] Read The Manual. Politer variaNT of RTFM. 2. Robert T. Morris Jr. The perpetrator of the great INTernet worm of 1988 (see {Great Worm}) villain to many, naive hacker gone wrong to a few. Morris claimed that the worm that brought the INTernet to its knees was a benign experimeNT that got out of coNTrol as the result of a coding error. After the storm of negative publicity that followed this blunder, Morris' s user name on ITS was hacked from RTM to RTFM. [Jargon File] (1995-03-31)