Changes

Of the above list, box, pyramid, rectangle strip, ellipse strip and super-quadratic curve (i.e. all but line) have fixed centers by default. This means that when you draw these objects or later edit them, the coordinates of their LCS centers remains fixed. As a result, as you draw the base of a box or a pyramid in the XY plane, or as you draw a rectangle strip, an ellipse strip or a super-quadratic curve in the XY plane, the dimensions of the object expand or shrink in equal amounts along the ±X-axis, and so do they along the ±Y-axis. By contrast, the line object doesn't have a fixed center by default. This means that the length of the line object always expands away from or shrinks towards its start point. If you check the '''Fix Center''' box in the line';s property dialog, then its length will changes in equal amounts from both ends.