IBM 3270 Manual page 65

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Save/Restore Format, this option has no effect; the 3290 will send
format controls.
When bit 0 is set to 0, the 3290 will not send format controls to a
printer that lacks Save/Restore Format capability. The 0 setting is
the default and is applicable to those operating environments
where the host program does not reestablish format controls with
each Begin Bracket. Note that the format of the local-copy output
depends on the format controls established by the operator or host
program.
When bit 0 is set to
1,
the 3290 will send format controls to the
printer, even though the printer lacks Save/Restore Format
capability. This enables the local-copy output to duplicate, as
closely as possible, the character image being copied. The 1
setting is applicable to those operating environments where the
printer is not shared or the host program reestablishes format
controls with each Begin Bracket.
Bit 1 - Automatic Form Feed before Local Copy.
Specify bit 1 as a 0 (zero) if you do not want to generate an
automatic form feed before a local-copy operation is performed.
Specify bit 1 as a 1 if you want to generate an automatic form feed
before a local-copy operation is performed.
l3it 2 - Automatic Form Feed after Local Copy.
Specify bit 2 as a 0 (zero) if you do not want to generate an
automatic form feed after a local-copy operation is performed.
Specify bit 2 as a 1 if you want to generate an automatic form feed
after a
loc~l-copy
operation is performed.
Bits 3 - 5 - Reserved. Specify 0.
Bit 6 - Disable Underscore for Intensified Fields.
When bit 6 is set to 0, the 3290 will underscore all fields carrying
the field intensify attribute.
When bit 6 is set to 1, the 3290 will
not
underscore fields carrying
the field intensify attribute.
Bit 7 - Update Panel Before Allowing Buffer Change.
When bit 7 is set to 0, the 3290 will s:uspend panel updating to
process a host transmission. Under high-data-rate conditions,
messages sent by the host and placed in the display buffer may get
overlaid with new data before being displayed on the panel.
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