Again, thank-you for all of the help from everyone. Here is one of the HTML menus translated into Japanese.
Looks good. You can also translate options like “Yes” / “No”, material / metal names, shape names, etc.
And you could put common stuff in a hash file (or .strings file) that can be loaded by multiple plugins.
There is no rule that says you cannot load strings from only one file.
In fact I’ve grabbed strings from some of the .strings files that come with SketchUp, and then discarded the LanguageHandler object. (In this case I never rely on these loaded into globally referenced objects, even though they are currently doing this. It is bad coding and these lang handlers could [and should be] moved into their own modules.)