LAS\SET MATCH Tol Turn on the checking of position-matching in ACCUMULATE and AVERAGE. Tol is the position tolerance in current units. The default is SET MATCH 2 (arcsec). The tolerance is also used in FIND, MAP and a few other com- mands such as CUBE.
LAS\SET NOMATCH Turn off checking of position-matching in ACCUMULATE and AVERAGE. This does not change the tolerance for the other functions like FIND and MAP.