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Definitions for the measurements used to scale the segments can be inspected and edited by clicking the Edit Measurement Set button . Doing so brings up another table that contains, in each row, the name of a measurement and the list of marker pairs that make up that measurement.

The distances between the experimental marker pairs, relative to the distances between the same markers on the model, are used to compute the scale factors (__40__How Scaling Works). To edit which markers make up a pair, click on one of the markers. A list of available markers will pop up, and you can then select from the list.

Use the  buttons to delete measurements or marker pairs, and the  buttons to add new measurements or marker pairs. Click the  button in the lower right or the  button in the upper right-hand of the window when you are finished inspecting or editing the measurements. Any changes you made will be saved; the only way to undo any changes you made is to undo them manually. Once a measurement has been added to the set, it will appear among the choices you have for computing the scale factors.

The weight value affects to what degree a match should be satisfied.

Larger weightings penalize errors for that marker or coordinate more heavily and thus should match the experimental value more closely (see __40__How Scaling Works).

For coordinates, the coordinate value to be matched can come from a specified motion file, be set to its default value, or be set to a user-specified (manual) value.