HP 8753E Programming And Command Reference Manual page 45

Figure l-4. The Data-Processing Chain for Measurement Outputs
All the data-output commands are designed to insure that the data
transmitted reflects the current state of the instrument:
OUTPDATA, OUTPRAW<I>, OUTPFORM, OUTPDATF, OUTPRAF<I>
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and OUTPFORF will not transmit data until all formatting functions
have completed.
the SWPSTART command. Refer to "Example 2E: lake4 - Error
Correction Processed on an External PC," located in HP BASIC
Programming Examples Guide.
OUTPLIML, OUTPLIMM, and OUTPLIMF will not transmit data until
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the limit test has occurred (if activated).
OUTPMARK will activate a marker if a marker is not already selected.
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It will also insure that any current marker searches have been
completed before transmitting data.
HP-IB Programming and Command Reference Guide