%hdbfile([full path to file])
DescriptionSets or gets (if the file is omitted) the location of the temporary variable database.
Default location is <HOMEPATH>/.smx/hset.db OR <TMPPATH>/hset.db (if a homepath can't be found)
NOTE: This can be set at server-init, or per-page. It's a very fast operation since it no longer opens the database.
See Alsopdbfile | hset