Routines

Doug Wrege, Engineering Experiment Station, Georgia

Institute of Technology, Atlanta, Georgia

This document is an attempt to explain how user-developed

software can be interfaced to the basic FOCAL package,

without requiring the user to spend valuable time trying to

understand all of its detailed workings. Section II deals with

a general discussion of how FOCAL works, in a descriptive

fashion. Section III is concerned with the philosophy of the

language, and the last few sections are technically oriented

toward helping the user actually code his additions. Several

examples and ready-coded routines, which may be used to

simplify the user's problems are included.

An extension of this document, which includes most of the

discussions contained in this volume, is offered as DECUS

NO. FOCAL8-271. (See abstract)