The DOS Compatibility Card software emulates the two-button mouse on all versions of the DOS Compatibility Card. You must use the keyboard in conjunction with the Macintosh mouse to emulate the second mouse button.
The = key (equal sign key) on the keypad acts as the second mouse button.
Position the mouse and hit the = key. To click with both buttons, press the mouse button and the = key at the same time.
Article Change History:
20 May 1996 - Revised to include all versions of DOS Compatibility Card.
05 May 1994 - Removed references to Houdini.