Key point

You can get a key point by clicking on the vertex of a solid or on the corner of a surface.

Example of key point you can get with a solid:

You can get all key points of a solid in one time by using the KEY POINTS button after clicking on point in the tools menu.

You can automatically detect all edge midle points of elements.You have to add a keyword in the top.cfg file located in Missler\Config :

D_ELT_KEYPOINT_MIDDLE 1

(use tabulation between the keyword between the last letter and the value 1)