Hello

I devellop an application in Java which allow user to draw a navigation chart so I've choose to use this JDiagram package (this is a very good package for me).

My boss ask my to hide a part of the diagram when the user need, because the diagram can be very large.

I've see on the online demo, the "Classification Chart".
How can put a cross next boxes like the demo to hide/show a part of the diagram?

I've to modify my axisting class ?

Regards
Fyx