Arbortext IsoDraw > Macro Language Reference > Object Data Types > Application Object - User Interface Preferences > app.useEllipsesIn3DTools
  
app.useEllipsesIn3DTools
Returns and sets the Find elliptical arcs property as boolean. This option appears as a dialog when using the rotational surfaces or extrusion tool. It specifies whether elliptical arcs should be modeled as ellipses.
app.useEllipsesIn3DTools = true