I've found it. It opens on click on small white button in function editor. The button has icon of 2 windows and is located on the mid top of the function editor.
Rina is right. Also if you use Speed In/Speed Out interpolation the graph gives you tangent handles, which I find is the most versatile of all controls.
the ease in ease out is just absolutely annoying . whenever i set an ease in / out percentage it either make it 0 or the default value although i took all the precautions (the sum of their values shouldnt exceed 100 , the frame shouldnt be hold frame , etc)
My problem is asked in the last videos comment section and it's been my problem in this entire course plz go to the last video and try to give me answer to my question
im no expert, but you can pre-draw the objects, and then cover them temporarily with whiteboard copied. then, cutting away the whiteboard from left to write, it can look written/drawn