Allow the Reciprocal Link facility to create two-way links between topics in different maps

Recent versions of MindManager have a reciprocal link facility. When you drag a topic onto another topic a context menu appears which includes the options to insert a link or to insert reciprocal links between the two topics.

However, the Insert Reciprocal Links option is not available when you attempt to do this between two open maps. The Insert Link command is still there so you can insert a link one direction by dragging a topic from one map to the other and then repeat the operation in the opposite direction (see the recent discussion here).

While this isn't too complicated to do, it is not as simple or efficient as the Insert Reciprocal Links facility. This should be introduced to simplify inter map linking.