Functions:
• Deadlocking latch bolt
• Either knob operates latch bolt (except when outside knob is locked from inside)
• Pushing turn button in inside knob locks outside knob
• Turning inside knob or turning key in outside knob releases locked outside knob
• Outside knob may be retained in locked position by pushing and turning button clockwise to a horizontal posotion: not released until turn button is manually returned to the vertical position
• Latch bolt is operated by key in outside knob or by rotating inside knob
• Inside knob always active