>I appreciate your reply, at least I already have an Idea about this xCase.
>BTW, what particular company owns it? Could you please indicate their Web
>Site (if any), or any information just to contact them.

I think the name of the company is Resolution, Inc. You can find their home page at www.xcase.com. They have a ScreenCam demo, and you can download a fully-functional version (limited to 5-table models) for free. This might be enough for you to decide if you like the way it lays out the diagrams....