[Zope] How to install hotfix?

[Anton Rops]

I have downloaded and unzipped the Hotfix file into the Zope directory. What
do I need to do further to install this hotfix, or is this it?

I have been looking for an answer on the website and also browsed through a
pile of documents and READMEs but could not find anything better than:
"Hotfix products are installed just as you would install any other Zope
product." But how is this done?

FYI: I'm running 2.5.0 now.

Thanks in advance.

Best regards,
Anton