Telitab$ is a string expression containing/returning a Telitab set.
Unfold/SortPar$ is a name of parameter for which to unfold and subsequently sort a dataset. For expalation on unfold see also the UNFOLD#();
Arg_1$[:ParLab_1$], .., Arg_n$[:ParLab_n$] are the query arguments. These can be string parameters or string values.
Remarks
Please note that the Unfold parameter may be "NullString" when unfolding is not necessary;
The query arguments are not required. When you use an unfold parameter and no query arguments the function is almost equal to the UNFOLD#() function. Only the modes of theUNFOLD#() function are missing;