DESCRIPTION
 msconfig is used to modify or examine the state of the middle-button emulation mode of the 
NetBSD/Atari mouse driver. When 
msconfig is used without the 
on|off parameter, it prints the current state of the emulation mode. The default mouse device is 
/dev/mouse. This can be overridden by means of the 
-f option.
When the emulation is turned on, a middle-button event can be generated by simultaneously pressing the left and right buttons. When turned off, a middle-button event is generated by pushing the fire-button of joystick1. Note that you'll need a special type of mouse to use this.