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&VARTABLE Manipulation Facilities

&VARTABLE provides the following table manipulation facilities:

ADD

Add an entry to a vartable.

ALLOC

Allocate a new vartable.

DELETE

Delete an entry from a vartable.

FREE

Free (unallocate) an existing vartable.

GET

Get (retrieve) an entry from a vartable.

PUT

Add or update (if there) an entry in a vartable.

QUERY

Query the existence of a vartable, and optionally return attribute information.

RESET

Delete all entries in an existing vartable, but preserve the definition of the table (like doing FREE/ALLOC).

UPDATE

Update an existing entry in a vartable.

The functions ALLOC, FREE, RESET, QUERY provide table-level manipulation. ADD, PUT, UPDATE, DELETE, GET are used to manipulate entries in a table.