None
A leadin move is not made.
Normal
The leadin move is perpendicular to the first cut in the tool path.
Tangent
The leadin move is tangent to the surface.
Tangent + Angle
The leadin move is tangent to the surface, plus a defined angle, toward the cut.
Fixed Angle
The leadin move is at a fixed angle.
Tool Vector
The leadin move is parallel to the tool vector at the point of the move.
For 4 Axis machining, it is recommended that you use Tool Vector to avoid rotary motion during leadin/leadout moves.