GIGI

This document is a comprehensive reference card for the GIGI terminal, outlining its programming and control functionalities. It is divided into several key sections:

1. Terminal Control Functions: Details VT52 and ANSI escape sequences for cursor movement, screen manipulation (erase, identify), keypad modes, and graphics mode entry/exit. It also lists key codes for cursor and auxiliary keypad numeric/PF keys, along with actions of various CTRL-key combinations (e.g., CTRL+G for BEL, CTRL+M for Carriage Return).
2. BASIC Programming Elements: Provides lists of BASIC commands/statements (e.g., AUTO, GOTO, PRINT, IF...THEN) and BASIC functions (e.g., ABS, SQR, STR$, HEX$) supported by the terminal.
3. ReGIS (Remote Graphics Instruction Set) Summary: This is a major section explaining how to program graphics functions. It covers:
   • Screen Control: Managing scroll offset, addressing, writing controls, clearing, setting foreground/background colors (including hue, lightness, saturation), and hardcopy options.
   • Drawing Primitives: Commands for creating and manipulating basic shapes like points, vectors, curves, and circles, specifying coordinates, offsets, and attributes.
   • Text Manipulation: Displaying strings, setting text attributes (slant, size, spacing), and selecting character sets.
   • Reporting: Querying terminal status such as loaded character set, macrograph information, and current cursor position.
4. ANSI Control Functions: Further elaborates on ANSI escape sequences for detailed cursor movement, setting various character attributes (e.g., colors, underscore, blink, reverse video), erasing specific parts of the screen, and controlling programmable LEDs.
5. Modes and Configuration: Explains how to enter graphic mode and lists SET-UP parameters and their sequences to configure terminal behavior, including linefeed, cursor key mode, scrolling, video mode, wraparound, autorepeat, overstrike, BASIC interpretation, and keypad settings.
6. Status, Reset, Print, and Tests: Includes commands to query terminal status, reset the device, print display images, and perform confidence tests like generating cross-hatch patterns or executing self-tests.
7. Device Control Strings: Defines specific escape sequences for sending ReGIS, SET-UP, auxiliary keypad, and hardcopy data, along with string terminators.

Overall, the document serves as a quick-reference guide for developers and users to program and control the GIGI terminal's functionalities, particularly its graphics capabilities, using a combination of escape sequences and BASIC commands.