curve13.xml
This is a takeoff on the design of Curve 1. In this case it is driven through a range defined by the clipper window of the "INPUT" position. The clipper of the "INPUT" position is driving the importance of both the "Range Input" and the "OUTPUT" position. Driving the "Range Input" causes the curve to be created for segment of the "INPUT" defined by the clipper window.
Driving the "OUTPUT" by the same clipper window of the "INPUT" makes this a positive curve (one rising from 0 to 100 in importance through the range of the "INPUT" clipper window).
A similar result could be achieved by eliminating the wire between the clipper window and the importance of the "OUTPUT" position and increasing the number of objecting arguments to the "OUTPUT" position driven by the "Reverser".