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Telitab_1$ is a string expression containing/returning the first Telitab set.
UnfoldPar_1$ is a name of parameter for which to unfold the first Telitab set, see also the UNFOLD#() function.
Telitab_2$ is a string expression containing/returning the second Telitab set.
UnfoldPar_2$ is a name of parameter for which to unfold the second Telitab set.
Mode% provides options how to return the result
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