Depending upon the given value of the given message priority and the message filtering level set using msgIfset, a blank line is either output to the user or discarded. If the status argument is not set to SAI__OK on entry, no action is taken. If an output error occurs, an error report is made and the status argument returned set to MSG__OPTER.

CALL MSG_BLANK( PRIOR, STATUS )

PRIOR = INTEGER (Given)

STATUS = INTEGER (Given and Returned)