Mosta you younguns probably don't remember when using a computer meant typing in a command at an on-screen prompt. For instance, to copy a binary file from one drive to another, and then verifying that the copy was correct meant typing:
C:\> COPY A:\filename.ext /B C:\subdir\filename.ext /B /V
I always set the prompt in red and the characters in green - on a black background, of course. This meant having the following command in my Autoexec batch file (ESC stands for ASCII character 027 / &h1B):
PROMPT ESC[40;31m;$p;ESC[40;32m;$g
And having the following command in my Config file:
Device=C:\Sysfiles\ANSI.SYS
Back in the day, any person with access to IBM's PC/XT library, and who had memorized enough of the DOS commands was a special person. If he/she had also memorized the I/O and memory maps and knew which jumpers to set on which peripheral adaptor board, then he or she had their coworker's respect, with the added bonus that once he/she had set up the PC/XT, it retained that exact configuration because most users were actually afraid of doing something wrong to their machines.
A really smart sysadmin could set up all of his/her coworkers' computers to operate from the same menu, and lock out users from the systems' DOS prompt.
(I think I got that PROMPT command right ... it's been a while since I've even seen a DOS-based machine.)