Cuttting keyhole slot in wooden gate

Stick the tape on the wall and extend the marks where the keyhole slots are Unstick the tape from the back of the picture and stick it horizontally onto the

I would like an FS that will cut a keyhole by defining a major diameter, minor diameter, slot length, rotation angle, and end type I think

keyhole slot Keyhole Slot Wall Mounts £ (£ Exc

keyhole slot dimensions How To Make A Keyhole Slot With A Keyhole Router Bit, CNC Router Projects Keyhole