Mode Lndicator Lights; Figure 4-4: Indicator Lights - Datatech Enterprises Apex 386/25 User Manual

Mode Indicator Lights
In addition to the character, number and control keys, every keyboard
has three lights that indicate the typing mode. These lights and their
functions are explained as follows:

Figure 4-4: indicator Lights

Caps Lock
When this light is on, characters are in uppercase mode.
Num Lock
When this light is off, the cursor-control function of the numeric keypad
is disabled and the numeric mode is activated.
Scroll Lock
When this light is on, text can be scrolled without moving the cursor.
Chapter 4: Keyboard 5