There are several layers involved in the processes that provide internationalization capabilities to Plone. Basically they are divided in the ones responsible to translate the user interface and the display of the localization particularities (dates, etc):
And the ones responsible for translating the user generated content. There are several add-on products that provides multilingual support to Plone:
The source code of this file is hosted on GitHub. Everyone can update and fix errors in this document with few clicks - no downloads needed.
For basic information about updating this manual and Sphinx format please see Writing and updating the manual guide.