If you mark your text as being in one of these languages, and have hyphenation enabled (via the menu View > Hyphenation), that text will be hyphenated automatically.
Installing Additional Hyphenation Dictionaries:
If your language is not listed above, you may still be able to install an automatic hyphenation dictionary for your language. When Nisus Writer launches, it looks for any TeX hyphenation pattern files in its hyphenation dictionary folder:
- In Nisus Writer Pro version 2.0.7 and earlier (before sandboxing) this folder is located at:
~/Library/Application Support/Nisus Writer Pro/Languages/Hyphenation/
- In Nisus Writer Pro version 2.1 and later (sandboxed) this folder is located at:
~/Library/Containers/com.nisus.NisusWriter/Data/Library/Application Support/Nisus Writer Pro/Languages/Hyphenation
You may find some TeX hyphenation dictionaries freely available on the web; LibreOffice makes several of them available for download. If you download a ".oxt" file, you will want to change the file extension to ".zip", expand the archive, and look inside for a ".dic" hyphenation dictionary.
In additional to automatic hyphenation, you can also insert a "soft hyphen" (aka: discretionary hyphen) into your text. Those hyphens are only shown exactly where they've been inserted, and only if a line wrap is required for that word. You may insert a soft hyphen by using the menu Insert > Special Character > Dashes and Hyphens > Soft Hyphen.