Opening and Saving Documents with Unsupported Characters
When loading documents, Oxygen XML Author Eclipse plugin receives the encoding of the document from the Eclipse platform. This encoding is then used to instruct the Java Encoder to load support for and to save the document using the specified code chart.
Saving Documents with Unsupported Characters
When saving a document with UTF-16 encoding, the saved document has a Byte Order Mark (BOM) that specifies the byte order of the document content. The default byte order is platform-dependent. That means that a UTF-16 document created on a Windows platform (where the default byte order mark is UnicodeLittle) has a different BOM than one created on a macOS platform (where the byte order mark is UnicodeBig). The byte order and the BOM of an existing document are preserved when the document is edited and saved.