IBM 6400 Setup Manual page 141

Compatibility Option 10:
Bottom Margin (SCS data stream only)
Any bottom margin specified or implied by a host command will be
overridden, causing the operator panel bottom margin value to be used
•
OFF (the default) ignores the operator panel bottom margin value.
•
ON forces the bottom margin to the value specified by the operator panel.
NOTE: If Bottom Margin is ON, the operator can enter a bottom margin; the
top margin will be forced to zero. If it is OFF, the operator panel
bottom margin is forced to zero.
Compatibility Options Menu (Coax Only)
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