Autodesk Inventor Tip: Disable Auto-constraining when sketching

Autodesk Inventor automatically applies constraints when creating geometry in the sketch environment (ie: parrallel, perpendicular, tangent, etc.). While this is generally very useful, there can be cases where you don't want Inventor to perform auto-constraining as you create sketch geometry. By holding down the CTRL key as you draw, auto-constraining is temporarily disabled.