FOCL.S, An Expanded Language for Small Computers

This document describes FOCL/S, which is a one-user version of the FOCAL/69 programming language for 8K PDP-8 and PDP-12 computer systems. It details the additional features included in this expanded version, such as support for up to 8 multiple subscripted array variables, direct core memory accessing, logical 'AND' operations, and extended error diagnostics. The documentation also provides information on the system's compatibility with FOCAL/69, memory mapping, and technical details for implementing user-defined machine language functions. A list of error diagnostics and memory map charts are included to assist the user in debugging and system configuration.