Having made the dimension you wish to modify the current element, giving this command causes the Dimension Modification window to display, and the selected dimension is highlighted with four pickable ‘hot spots’ that allow modification of the DDEG, DTRA and DTOF attributes of the dimension. In addition, DTANG can be modified using the Text angle option button.

To modify the dimension, click the ‘hot spot(s)’ that you wish to move, click to identify the new position (a transient image of the dimension displays, which moves as the mouse is moved), then click OK on the Dimension Modification window. (Cancel allows the command to be aborted with no change to the dimension; Reset causes the position of the current ‘hot spot’ to be reset to its database position; Delete causes the current ‘hot-spot’ to be deleted or set to a default position.)

The Dimension Modification window also contains the point construction Option list button that allows positions to be defined in terms of end-points or intersection points.