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                 Determines whether a record has been locked                  
function PXNetRecLocked
   (TblHandle       : TableHandle;       { table to check current record in }
    var Locked      : Boolean): Integer; { returns TRUE/FALSE               }
Errors: PXERR_INVTABLEHANDLE     76  Invalid table handle
        PXERR_NONETINIT         107  Engine not initialized with PXNetInit | 
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