Put a point at intersection

[Patchy]

May you help me with a routine that when I pick point A then point B then it will have a node at point C as shown in the photo.

Thank you for helping.

[ВeekeeCZ · Accepted solution]

You just need to use .y coord filter.

(defun c:pnt () (command "_.point" ".y" pause pause) (princ))

[Patchy]

That works. I'm happy

Thank you BeeKeeCZ