Linux is using UTF-8 system-wide as default charset, so you can directly print UTF-8 chars but you will have to do charset conversions for anything else.

MorphOS (like AmigaOS) is using an 8-bit only charset (it is given by the keyboard preferences). If you want to print UTF-8 chars you will have to use the charset.library to convert from UTF-8 to "system" encoding (of course not all UTF-8 chars can be converted to an 8-bit charset).