AGFA Billy Clack Instruction Manual page 6

There are two red windows in the back of
the camera for observing the film framing
indicators (Fig. 7). When you continue to
turn the film (be careful! Do not touch
the lenses of the lens and the viewfinders!)
after loading, a few preliminary signals
(hand and dots) first appear in the lower
observation window, which is farther away
from the film key, and then the number
1: The first part of the film is ready for
exposure. After the first exposure,
immediately continue to rotate the film until
the number 1 appears in the upper image
window, whereupon the second exposure can
be taken.
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