Just watched this video and although I don’t understand a thing she is saying, I am interested in the tool that she is using - and wonder if anyone might he familiar with it?
it seams that it is some kind of tool that she developed her self, it is not a native scriptcase solution, 
No. It’s whimsical; wireframes, flowcharts, sticky notes and mind maps. I logged on and played with it the other day. Nice simple application; but no - does not integrate in any way with Scriptcase.
so what is she doing? she only use it to create a background image?
Wireframe … not a background image … it’s a design layout … it’s how she wants her form to look when she is all finished with it. Using a tool like that enables you to plan how you want your form to look, how each connects to the other (workflow) and to share that planned layout with your client before you start coding. It has its value. Whimsical is pretty; caught my eye. But I tend to make notes on a notepad and in the comments of my code as I go.