The NDF_ system also allows you to obtain an HDS
locator for a data structure whose NDF
identifier you supply. In effect, this is the reverse of the
importation process described in §. It is
performed by the NDF_LOC routine, as follows:
CALL NDF_LOC( INDF, MODE, LOC, STATUS )
The MODE argument specifies the mode of access required (`READ', `UPDATE' or `WRITE') and LOC returns the resulting HDS locator. Note that you should annul this locator (e.g. using DAT_ANNUL) when it is no longer required, as the NDF_ system will not perform this task itself.