The TkMan button behaves as follows. Clicking mouse button 1 on the TkMan button launches tkman (the button stays depressed and inoperative until you exit tkman). Button 3 is used to direct tkman to look up the man page for the word that is the current X selection (e.g., highlighted with the mouse in some application). We start tkman browser unless it's already running; if it's running, we simply send tkman instructions.
Client TkManAll parameters are adjustable in the preferences manager.