BASIC-11/RT-11

This document, revised in March 1978, provides essential information for writing and running BASIC-11 programs on the RT-11 operating system. It covers getting started, system-dependent file operations, utility functions, and interfacing assembly language routines with BASIC. It includes instructions for setting terminal margins, managing system interrupts (CTRL/C, CTRL/O), and memory-efficient programming. Chapter 4 provides detailed guidelines for experienced MACRO-11 programmers to add assembly language routines to BASIC.