Help Language Fallbacks (uigwt0013m000)

If help is served from uploaded archives, language fallback handling works in a similar way as version fallback handling, but there are two differences:

• There is at most one fallback language. There is no derived chain.
• The default fallback language is always English ("en-US").

If help is requested from uploaded archives, this matching algorithm is performed:

1. Check if help for the requested version and the requested language is available. If found, return this help. Otherwise proceed with the next step.
2. Check if help for the requested version and the fallback language is available. If found, return this help. Otherwise proceed with the next step.
3. Check if help for the "derived from" version and the requested language is available. If found, return this help. Otherwise proceed with the next step.
4. Check if help for the "derived from" version and the fallback language is available. If found, return this help. Otherwise proceed with the next step.
5. If there are no more "derived from" versions, return an error page. Otherwise proceed with step 3 using the next "derived from" version.

Because of differences between browsers, we recommend that you only use language codes, and not the country codes, in the Language code column. Some browsers only send language codes. In the Fallback column however, use language code and country code because that is the way the help is installed on the file system.