The 'Rapid-Return 1' motion-law is Not available in the Motion-Law Selector.
The Rapid-Return-1' motion-law is a Rise & Return motion-law that is continuous in Velocity and Acceleration throughout.
Construct the 'Rapid-Return 1' motion with two Flexible Polynomial Segments.
The first segment is the 'Rise', and the second the 'Return'. Each segment is a 'mirror' of each other.
Usually, the segments have an equal duration, but this is not necessary.
Continuity at the Mid-Point Blend-Point
The Position is a maximum, and the Velocity is zero.
The Rise segment [below, in Blue] ends with a finite, negative acceleration.
The Return segment [below, in Red] starts with the same finite, negative acceleration. Thus, there is acceleration continuity.
The Jerk is discontinuous at the mid-point. [The Jerk is also discontinuous at its start an end- points].
The position graph makes a rapid-return at the mid-point because there is a large negative, but continuous, acceleration at the mid-point.
* An acceleration discontinuity would give a very poor dynamic response if applied to any mechanical system.