A series of computer programs and routines intended to assist researchers in the analysis of language usage--with a power comparable to statistical computer routines--was developed by the Southwest Regional Laboratory (SWRL). This document is one of a series that describes the design specifications for the individual modules which comprise the Language Analysis Package (LAP). The Scan Module presented here will read input text, divide it into words, and check for special characters that the user indicates as identifiers to initiate further processing procedures. (DGC)