description: Sets initial values of acceptance flags for the rows of the current data table of a data set. A
non-zero flag indicates that a row is “of interest”.
SDDS_table: Address of the SDDS_TABLE structure for the data set.
row_flag_value: An integer value indicating the status to assign to all rows. A non-zero
value indicates acceptance, while a zero value indicates rejection.
return value: Returns 1 on success. On failure, returns 0 and records an error message.