Heritage from outside

I would like to know how to specify, in a class diagram, that a class inherites from a class that is not defined in the current diagram? For example a system library class.

Hi Fraveau,

Thanks for your post. Please refer to the flash movie in the following link to see how to inherit from a class that is from some library:

If there is any further inquiry, please do not hesitate to contact me.

Best regards,
Lilian Wong