9.13 Generating HTML Help in non-Western languages
HTML Help does not support Unicode well, even in the topic pane where it might appear to do so. Topic content is rendered by the Internet Explorer HTML engine, so the topic pages themselves could use UTF-8. However, the Search function works only on characters that are in the Windows code pages that HTML Help supports. For example, English text in a Japanese file can be found, but Search will not find any Japanese content.
§9.13.1 Converting from Unicode to Windows code pages
§9.13.2 Specifying locale and language for HTML Help
§9.13.3 Preventing inclusion of Unicode numeric references
§9.13.4 Coping with FrameMaker index-entry conversion defects
§7.5.9.3 Specifying index sort type and locale
§9.3.6 Deciding whether to compile HTML Help
§9.14.3 Compiling in a different language
> 9 Generating Microsoft HTML Help > 9.13 Generating HTML Help in non-Western languages