once there was a 3D modelling software by the name of Pro/Engineer............ long time back there was wonderful software going by the name of Pro/Engineer for 3D modelling.what happened to it?it was powerful,it was logical,had lots of capabilities,when ever you thought this could not be done in Pro/E..there was the functionality.then every body started copying it...Solidworks,Inventor,Solid Edge...yes all of them...and now they say that these copied software's are better......yes surely...u just had to copy the main functionality and then tweak it..and say we are better..so original right.never mind....what i do mind is...Pro/E copying user interface...of these copied softwares..instead of building on there own functionality.why have you lost your confidence....PTC?