sets the UTF-8 flag. When this flag is
ne considers the current document as UTF-8 coded. Note that
this flag is set automatically upon file loading (if possible) if you
required automatic detection. See UTF8Auto.
If you invoke
UTF8 with no arguments, it will toggle the flag.
If you specify 0 or 1, the flag will be set to false or true,
respectively. When you try to set this flag, the document will be checked
for UTF-8 compliance, and you will get an error message in case of
failure. When you try to reset it, the document is set to ASCII or
8-bit, depending on its content. A ‘U’ will appear on the
status bar if the flag is true. Alternatively, an ‘A’ or an
‘8’ will be displayed to denote whether the document is composed
exclusively by US-ASCII characters, or also by other 8-bit characters
(whose encoding is likely to be part of the ISO-8859 family). Note that
each time this command modifies the document encoding, it also resets the