Epson EQUITY 3865X/20 PLUS - Manual (Page 257)

Super VGA mode
Special features of the built-in VGA adapter available when you
are using certain display drivers and a multi-frequency monitor.
These features include 132 column text mode and resolutions up
to 800 x 600 in 16 colors.
Switch
An option added to an MS-DOS command that modifies the
way the command works. Switches are usually preceded by a /
(forward slash). For example, if you add the IS switch to a
FORMAT command, MS-DOS installs the operating system on
the diskette as it formats it. See Parameter.
System diagnostics
A series of checks you can perform on the computer to make
sure the hardware is functioning correctly.
System diskette
A diskette that contains the operating system.
Tracks
Addressable, concentric circles on a disk, resembling the grooves
on a record, which help to divide the disk into separate
accessible areas. There are 80 tracks on each side of a double-
sided 1.2MB, 1.44MB, or 720KB diskette and 40 tracks on each
side of a double-sided 360KB diskette. The number of tracks on
a hard disk depends on its capacity.
VGA
Video Graphics Array. A type of high-resolution display
adapter. The VGA adapter built into the system board of
your computer can display 16-color graphics at resolutions up to
800 x 600 or 2560-color graphics at resolutions up to 640 x 480.