The next chapter discusses program instruction sources and instruction types. Instructions can be entered interactively from the keyboard, or can be read from script files. A terminal interface is used which closely mimics the DCL command recall facility. Script files are discussed, including the branching and looping capabilities. The next chapter explains how variables are used in the program, including the maximum allowable number and size of variables.
Variable indices are a major feature of the program, and are described in some detail.
The program allows for string variables as well as numeric variables, and some novel uses for string variables are discussed. The bulk of this manual is a collection of examples, roughly divided up into categories by chapter.