What does a hold button do on a 92 mazda 121 auto

geminidragon, Mar 23, 6:42am
drove from cold and noticed a new light on the dash (hold) light ,i pressed the button on the gear stick and the hold light did not turn off so i pulled over and turned off the car ,restarted and the light stayed off ,can anyone tell me if this is a problem ,should the light have turned off when i pressed the button on the gearstick ,thanks