Patch to FOCAL-W for LINC-8 A-D Converter

This document describes a patch for the FOCAL-W program to allow it to interface with the LINC-8 analog-to-digital (A-D) converter. It defines the format for calling the function and specifies that the sampling rate is limited to 100 samples per second. The text includes technical instructions and source code listings for implementing this patch, including specific corrections and renumbering required to make the program compatible with FOCAL 1969.