## Display Device Driver Reference for OS/2

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### Using Extended Screen and Keyboard Control (ANSI.SYS, ANSICALL)

This section explains how to issue special control character sequences to:

Control the position of the cursor
Erase text from the screen
Set the display mode
Redefine the meaning of keyboard keys

ANSI extended screen and keyboard control sequences are supported in DOS sessions by ANSI.SYS, an installable device driver. In OS/2 sessions, these control sequences are supported by the ANSICALL component within OS/2 CHAR. DLL.

Note: In this section, unless otherwise specified, ANSI refers to both ANSI.SYS and ANSICALL.