If this option is not activated, the transformation procedure is called on a record-by-record basis. This will cause the procedure to be executed for every incoming record. Activate this option to call the procedure once for every incoming whole block of records contained in the IN-port at the time of component step. In this case you are provided with two additional variables representing the IN-Port and OUT-Port content.
When processing in block mode, a unified approach can be used to transfer records form the input buffer IN to the output buffer OUT.
In addition to the buffer areas IN and OUT where the actual data are sitting, the Variables section also includes the IN.cols, IN.rows, OUT.cols and OUT.rows variables.
IN.cols and IN.rows contain the dimension of the input buffer (number of rows, number of columns).