def __init__(self,
                 rewardlogic,
                 focused = True,                               # whether this task is currently focused
                 markerbase = 1,                                # markers markerbase..markerbase+6 are used                       
                 event_interval=lambda: random.uniform(45,85),  # interval between two successive events
                 snd_on='xBleep.wav',                           # picture to display for the enabled light
                 screen_offset=0,                               # offset to position this icon on one of the three screens
                 snd_params={'volume':0.3,'direction':0.0},     # parameters for the sound() command
                 ):