Canon 7 How To Use Manual page 11

When the Shutter button is pressed, the film can be wound again with the |ever after the shutter is
actuated.
Cable release can be attached to the shutter button.
The film advanced whenever the film winding lever is completely wound and the exposure counter dial is
advanced by one number indicating the number of exposed films. The exposure counter dial returns to
the "S" starting position automatically when the back cover is opened.
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