[Help-glpk] How to create the copy of a node?

[andre camatta]

I need to permorm a heuristic in a node (glpbcs). I
would like modify the node separately and
not to modify the tree (IES).
How to create the copy of a node or to revert the done
operations (setting variables and addition of invalid
cuts)? 

Thanks,

André Camatta

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