COLS=c Determines the number of columns displayed on screen. The default setting is 80 columns.
Although you can configure the number of columns to any value, other standard values
include 40 and 135. Using a nonstandard value can result in command line application problems.
LINES=n Determines the number of lines in the screen buffer. The default value is 25 (the other
standard value is 50). You can use any value for the number of lines.
RATE=r Determines the typematic rate for the keyboard. The typematic rate determines how
fast Windows will repeat a character when you press the associated key on the keyboard. You
STARTING THE COMMAND INTERPRETER 121
may use any value in the range from 1 through 32. The default setting is 20 characters per second.
If you set the typematic rate, you must also set the delay.
DELAY=d Determines the delay between the time you press a key and the time Windows begins
repeating the associated character on screen. Valid values for d are 1 (0.25 seconds), 2 (0.50 seconds),
3 (0.75 seconds), and 4 (1 second). The default value is 2.
Managing Environment Variables with the Set Command
The term environment variable is foreign to many users because environment variables work in the
background to make life easier for both GUI users and those who work at the command line.
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