Douglas E. Wrege, Georgia Institute of Technology,

Nuclear Research Center, Atlanta, Georgia

It is the aim of this paper to help the user to code specific

routines in FOCAL^TM so that his dialect of FOCAL can be

applied to his application (without being forced to understand

in detail all the workings of FOCAL). Included are descriptive

discussions of how FOCAL works, the philosophy of the lan-

guage, and sections technically oriented toward helping the

user actually code his additions. This paper is an extention

of DECUS NO. FOCAL8-17 and includes most of the dis-

cussions contained therein, The particular versions of

FOCAL described will be FOCAL/69 and FOCL/F the

latter being a version of 8K FOCAL/69 with modifications by

the author allowing assembler patches to be more easily

added. (DECUS NO. FOCAL8-227a.)