DBCLOSE - Database Close at Session End

This Natural profile parameter determines whether or not Natural closes all databases that it has accessed during a session at the end of this session.

Possible settings	`ON`	Natural closes all databases.
	`OFF`	Natural closes only those databases which had been opened by an explicit open command. An explicit open command will be issued in the following cases: profile parameter `ETID` is not set to `' '` (blank), profile parameter `DBOPEN=ON`, the open is forced by the `OPEN` option of macro `NTDB` or profile parameter `DB`.
	`ETDB`	Natural closes only the database specified with the profile parameter `ETDB`.
Default setting	`OFF`
Dynamic specification	yes
Specification within session	no