[Zope] customizing existing management interfaces

[Benjamin Buffereau]

Sorry for this question has probably been answered before somewhere...

Is there an easy way to customise an existing management interface? I'm writing
a product with a class deriving from "Folder", and I would like to change very
few things in the "manage_main" interface (like displaying the folder title for
example). Do I really need to copy/paste folder's "main.dmtl" and edit it??

Regards,
Benjamin.