Is it possible to set selector properties so that the selector's default position is, for example, the position of the first click of creation of the entity? I think on balance that it would be a time saver. Most lines I edit have transformations derived from endpoints, polygons lose reference from centre if they're odd-number-sided, not ortho, or irregular, and so on. Boxes are created from corner points in 3D. Is there a setting I've overlooked? Does anyone have alternative ideas, or think that it would be useful?
*or a SEKE selector toggle between first point and centre of extents?