The toolpath continues along the hole axis up to the air move safety level. The air move safety level can be definied as absolute distance from the origin of CS or incrementally from the part (plus workpiece and fixtures) top level.

AMSL - Air move safety level

The Rapid distance defines the point on the holes axis in which the cycle should start. The tool will go to this point at rapid feed. If the Start cycle at air move safety level option is enabled then this point is extended to the air move safety level.

AMSL - Air move safety level
RD - Rapid distance
FD - Feed distance

The Feed distance dimension defines the point on the hole's axis from the upper level of the hole on which the feedrate is switched from the rapid to the work one. So this distance is used to avoid the collision on the rapid feed.

AMSL - Air move safety level
RD - Rapid distance
FD - Feed distance