Option 2D sketch
These options are available when the type of curve selected corresponds to ''2D sketch''.
To activate the zone ''Selection of a plan'' in order to specify the plan (or a face planes) on which the sketch will be created. In the absence of selection, the curve is created as regards face of the document SOLIDWORKS.
Option of 2D sketch: Line
Option of 2D sketch: Spline
In general options it is possible to create the curve on a level shifted in Z compared to the selected plan.