Typewriter Inquiry Control

This document, Permanent Memorandum No. 1109 dated June 19, 1961, outlines the Typewriter Inquiry Control (TIC) routine for PDP computers. The routine allows users to inspect or modify memory locations in octal notation directly from the console typewriter. It provides instructions on how to start the routine, input memory addresses, perform modifications, and use various delimiters to control the output format and program flow. The document includes special notes regarding register preservation, color-coded output, leading zero handling, and example use cases.