HELP information may be requested either by typing HELP qualifier1 qualifier2 qualifier3 ... or HELP $TOPIC qualifier1 qualifier2 qualifier3.... The $TOPIC form should be used if the HELP qualifier1 instructions say to do so. Only the first 3 letters of any qualifier need be typed. Also leading / marks are ignored. Hence HELP SET BUF and HELP SET /BUF are treated identically. The order of qualifiers is important and any secondary, etc. qualifiers are described by typing HELP qualifier1. Valid qulaifiers may be found by typing  HELP INDEX.