What software is used to draw in video tutorial?

Hi all,

This screen shot is in UE4 Video tutorial start about Blueprint develop.

I want to know, What software is used to draw in video tutorial?

![8274-3o{qerzmz{]w605l0(u7(q.jpg|1125x633

It is Photoshop with a drawing tablet I believe. I remember seeing eraser and marquee tools that look the same as in Photoshop.