codings are ENC_UTF8, ENC_UNICODE_BE and ENC_UNICODE_LE.

int SwriteBOM(IOSTREAM *s)

This function writes a Byte Order Mark (BOM) to s and should be called immediately after opening a stream for writing. If the encoding is one of ENC_UTF8, ENC_UNICODE_BE or ENC_UNICODE_LE it writes the code point \ufeff (a zero-width white space) to the stream in the current encoding and sets the SIO_BOM flag on the stream.

int Scanrepresent(int c, IOSTREAM *s)

Returns 0 if the encoding of s can represent the code point c and -1 otherwise.

12.9.6 Foreign stream line endings

Text streams have a field newline that controls the handling of the newline convention. Note that inside Prolog all lines end with a single newline (\u000a, \n) code point. The values are described below. The default depends on the OS and can be manipulated using the newline(Mode) property of set_stre