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* Changes in Emacs 21.3
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++++
** Emacs now supports ICCCM Extended Segments in X selections.
Some versions of X, notably XFree86, use Extended Segments to encode
in X selections characters that belong to character sets which are not
part of the list of standard charsets supported by the ICCCM spec.
Examples of such non-standard character sets include ISO 8859-14, ISO
-8859-15, KOI8-R, and BIG5. The coding system `compound-text' now
-supports these extensions. If you don't want this support, set
-`selection-coding-system' to `compound-text-no-extensions'.
+8859-15, KOI8-R, and BIG5. The new coding system
+`compound-text-with-extensions' supports these extensions, and is now
+used by default for encoding and decoding X selections. If you don't
+want this support, set `selection-coding-system' to `compound-text'.
+++
** The parameters of automatic hscrolling can now be customized.