The distance apart (in points i.e. 1/72 inches) that the repetitions should be. In 3D scenes, only one label will be placed per line feature. This value is only used if LabelDefinition.repeatStrategy is enabled. The distance is measured on the screen along the line feature. As the user zooms in closer, two repetitions move further apart on the screen, until there is room for a new repetition between them. The default is 216 points i.e. line labels should be repeated approximately every 3 inches along long features.
The distance is considered a guide for the approximate label separation and should not be used for precise distance markings.
A distance of 0 disables label repetition.