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DBUNLOCK() :
Release all locks for the current workarea
DBUNLOCK() --> NIL
DBUNLOCKALL() :
Release all locks for all workareas
DBUNLOCKALL() --> NIL
FLOCK() :
Lock an open and shared database file
FLOCK() --> lSuccess
NETERR() :
Determine if a network command has failed
NETERR([<lNewError>]) --> lError
NETNAME() :
Return the current workstation identification
NETNAME() --> cWorkstationName
RLOCK() :
Lock the current record in the active work area
RLOCK() --> lSuccess
SET EXCLUSIVE
Establish shared or exclusive USE of database files
SET EXCLUSIVE ON | off | <xlToggle>
UNLOCK :
Release file record locks set by the current user
UNLOCK [ALL]
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