How can I simplify an UML class diagram inheritance notation?

I have a super class, that 40 other clases inherit, at this point I would like to simplify the diagram, to be exact all the inheritance relations (40 relations point to a single class) all these "arrows" just make the diagram a complete mess, Is it posible to simplify this?

Solution

There is no direct way to simplify such case in UML Specs, but really 40 classes to inherit from one class? I think you may need to re-consider your design again.

In general, you can omit attributes and methods from classes, that way is better at least.

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