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Redefine

An object may be redefined using its context menu (3.1.1). This is very useful for subsequent changes of your construction. You can also open the Redefine dialog by double clicking on a dependent object.

In order to place a free point A onto a line h, choose Redefine for the point A and enter `Point[h]`. To remove the point from this line and make it free again, redefine it to some free coordinates like `(3,2)`.

Another example is the conversion of a line h through two points A and B into a segment: choose Redefine and enter `Segment[A, B]`.

Redefining objects is a very versatile tool to change constructions width hindsight. Please note that this may also change the order of the construction steps in the construction protocol (3.1.6).