Location — This extracts the X, Y or Z coordinate of a point. The coordinate extracted depends on the selected Pick filter setting. The coordinate system is based on the Alignment setting.
Distance — This extracts the distance between two points. The Pick filter setting controls whether the distance is measured in the X, Y, Z directions, in the XY plane (2D filter) or in 3D. The coordinate system is based on the Alignment setting.
Same as — This extracts either the radius or diameter of a circle or an arc, or the depth of a feature. In the case of blind holes, the overall depth of the hole is extracted, including the additional depth to represent the drill tip.
Length — This extracts the length of a curve or geometry segment.