Additions to FOCAL W

This document, dated October 1969, details several modifications and additions for the FOCAL W language on 4K and 8K systems. It includes:

• A patch to extend group number limits to 31.99.
• A routine to toggle terminal echo for simplified tape reading.
• A method to store dimensioned floating-point arrays in field 1 (8K systems).
• A plotting interface routine for CALCOMP devices.

The document includes full assembly language listings, memory symbol tables, and error message definitions to support developers implementing these features.