Retraction
If this option is activated, the tool path is cut to insert in every depth a lead out.
This lead out is made in the inverse direction of the machining direction.
The depth which is used to add this lead out is defined by the field "Depth".
The feed rate used during the this lead out is given by the user in the field "Retract feed rate". It can be
Rapid
The tool feed rate
A numerical value
The lead out value defined with the "Retract" field can be in incremental or absolute mode.

With the incremental mode, each lead out is done according to the last point of each cut more the "Retract" value
With the absolute mode, each lead out is done on a plan calculated according to the last point of the first cut more the "Retract" value
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