I believe you are correct regarding the documentation.
The front-end UI is based on GWT which provides support for i18n. However, there is a good chance that any somewhat recent documentation will not be applicable to the current version used within Studio as it is based off of a fairly dated 1.5.3.
Any messages propagated from the back-end can be internationalized using gettext. There are several .po files you can find under the /opt/vmware directory for example.
1 person found this helpful
Ah yes, so there is also an internal mechanism leveraging property files.
If you specify a language file based on this convention "vamilocale_" + localeName + ".properties". You will override the default.
You can see the default in /opt/vmware/share/htdocs/locale