How to get already created node or element set

Dear All,

I am using .dat and .op2 file for loading the model in hyperview.

In .dat file we already have created sets for some elements and nodes seperatly.

I want to take node id or element id from that sets. But, by using the label name of set.

I am using tcl/tk for that but not getting.

Please provide any script to find the same.

Best Regards,

Vikas Kumar