Determines if an alias is in use or a table is open in a specific work area.
Syntax
USED([nWorkArea | cTableAlias])
Returns
Logical
Arguments
nWorkArea | cTableAlias
Specifies a table's work area or alias. USED( ) returns a logical true (.T.) if a table is opened in the work area you specify with nWorkArea; otherwise a logical false (.F.) is returned. USED( ) returns a logical true (.T.) if an alias is in use with the alias you specify with cTableAlias; otherwise false (.F.) is returned.
If you omit nWorkArea and cTableAlias, USED( ) returns a logical true (.T.) if a table is open in the currently selected work; otherwise false (.F.) is returned.
Remarks
USED( ) can determine if an alias is in use or if a table is open in a specific work area.