A hot air balloon is modeled dimensionless to show some commands of surface modeling in NX. Commands in the video tutorial Sketch Datum Swept Pattern Feature Fill Surface Bounded Plane Sew Face Blend
Datum Plane command creates datums by using different methods. Home Ribbon Bar => (Datum Plane drop-down)=> Datum Plane Menu => Insert => Datum/Point => Datum Plane You can select different types of methods to create planes from the first tab
“Datum Feature Symbol” command creates datum symbols.