Casio IT-2000W - Manual (Page 282)

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9.8 Reverse Video Utility
Overview
This utility is used to change the entire screen to reverse video.
From the nature of the FSTN semi-transparent type LCD unit of this terminal the density of colors
(tones) will be reversed. So, for example, a light color appears dark and a dark color appears light.
To avoid this problem use this supplied utility to represent colors as closely as possible.
This utility is provided as a DOS application and should be activated as a command line or as
child-process of the application program.
File name
LCDREV.COM
Startup Method
This utility is not supplied on the basic drive (C:). Copy it in the F-ROM drive (D:) or RAM disk
(A:) before use. This program can be used either as a single command or as a child process.
Operation Method
Format: LCDREV Option
Option Function
0 Normal (Returns to default value at a time of boot up)
1 Only text is reversed
2 Only graphics are reversed.
3 Both text and graphics are reversed.