Curve Approximation, Extension?

 From:  OSTexo
6849.1 
Hello,

Is it possible in MoI to perform curve approximation and extension? For instance being able to select a curve and then be able to extend that original curve along a G1 or G2 path? It might be useful if surfaces created from those curves needed to be trimmed away to avoid any sort of surface anomalies. I realize trimmed surfaces can be sort of limiting in some cases but if trimming can be done as a near final step before joining it may alleviate the need to fight some surfaces.