From SpinetiX Support Wiki
Using UTF-8 character encoding is the safest way to ensure compatibility with all languages.
- If you are building SVG files outside of Elementi, you should specify UTF-8 character encoding in the XML header, especially if the document is hosted remotely.
- Simple text editors, such as Notepad, save by default in ACSII which is acceptable for English. If you are seeing strange characters or otherwise garbled output, check that you are not using an ASCII-encoded source file with non-US English characters.
- Notepad can be set to save into UTF-8. Notepad++ will also tell you the encoding of an opened file.
- See how to encode Excel files with UTF-8.