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the third element (A.3) of the table column with header "A" (Results_of_Process#.A) is selected and assigned to parameter A.

Results_of_Process$ has become a pointer to the Telitab output set of program Process. Process will only be invoked if one of the input arguments obtains a new value. This is a simple and reliable method which also applies for error trapping, but the obvious disadvantage is that existing programs have to be adapted to deal with Telitab IO (reading a Process.EPI file, running and producing a Process.EPO file containg the output).

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