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- SDDS_SetRowFlags---Set all row-selection flags to a given value, indicating whether all rows are
initially ``of interest'' or not. By default, all rows are initially of interest.
- SDDS_SetRowsOfInterest---Modifies row-selection flags based on string matching to the data in
a named column, with general two-term logic supported using the previous status of each row and
the results of the newly-requested matching.
- SDDS_FilterRowsOfInterest---Modifies row-selection flags based on whether the numeric entries
in a named column are within a specified interval, with general two-term logic supported using the
previous status of each row and the results of the newly-requested matching.
- SDDS_CountRowsOfInterest---Counts the number of rows in the current data table that are currently
``of interest'', i.e., those with non-zero row-selection flags.
- SDDS_DeleteUnsetRows---Deletes all rows of the current data table that are not currently
of interest.