IBM 545 Output Punch 1 Reference Manual page 17

card bedis stacked, the one in the centeris registered at the
YD read station, and the oneat the right is registered at the
punchstation. This automatic feeding occurs after the
card, completely processed, passes column80.
Whenthe switch is turned off, cards may be fed manually
by pressing the feed key, program one key, or the program
two key. (See "Combination Keyboard.'')
6
Clear
The clear switch (a spring-loaded, self-restoring switch)is
used to clear all cards from the feed bed, without feeding
additional cards from the hopper. Oneoperation ofthe
switch initiates the multiple cycles necessary to complete
the operation.
Keypunch Mode
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