The individual metric score functions used to calculate the plan quality scores are presented in Table 3, on the left. The minimum number of points necessary to describe every function is given. A step function is thus defined by one value/score combination, a single‐slope linear function by two, and two linear segments with different slopes by three. Examples of how the value/score pairs from Table 3 define the shape of the score function for each of the three scenarios above are given in Fig. 3.