Compaq 5017 - Manual (Page 25)

Operation
Reference Guide 4–13
If this occurs, you may need to readjust the parameters of the
monitor screen by using the on-screen display. User changes can
be made to any or all of these modes and saved in memory. The
monitor automatically stores the new setting, then recognizes the
new mode just as it does a preset mode. In addition to the 11
factory preset modes, there are eight user modes that can be
entered and stored.