IBM B50 - Manual (Page 44)

On all of the keyboards, you can adjust the tilt position for typing comfort. To tilt the
keyboard, pull out on the keyboard legs. The legs snap into position. To decrease
the tilt of the keyboard, rotate the keyboard legs until they snap into the bottom of
the keyboard case.
The keyboard cable plugs into the connector at the rear of the server.
Using the Mouse
The mouse is a hand-operated locating device. Consult your application
documentation for the exact use of the three-button mouse.
You can use the mouse to perform functions such as positioning a cursor, selecting
items from a menu, or moving around in your document much easier and faster than
if you used only the keyboard. The cursor moves exactly as you move the mouse on
a flat surface, such as a desktop.
When you move the mouse around on a flat surface, the cursor moves on the
display screen; the movement changes the position of the cursor.
2-12 7046 Model B50 User's Guide