Introduction to U/W-FOCAL for the PDP/8

This document is a user guide for U/W-FOCAL, a powerful and interactive language for the PDP/8 computer. It acts as an advanced version of FOCAL, featuring a stack-processing structure that is user-friendly for those familiar with BASIC or FORTRAN. The manual covers system requirements, loading procedures, command modes, editing, arithmetic operations, variable management, I/O commands, and provides a comprehensive command and function summary for programmers to perform complex calculations and laboratory experiments.