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* Lisp Changes in Emacs 23.1
+** The function invisible-p returns non-nil if the character
+ after a specified position is invisible, or if its argument
+ as an `invisible' property would make a character invisible.
+
** Non-breaking space now acts as whitespace.
+++
+++
** The regexp form \(?<num>:<regexp>\) specifies the group number explicitly.
+** New function `window-full-width-p' returns t if a window is as wide
+as its frame.
+
+** The new function `split-string-and-unquote' does (what?)
+
+** The new function `combine-and-quote-strings' does (what?)
+
+** The new function `image-refresh' refreshes all images associated
+with a given image specification.
+
+++
** New variable `user-emacs-directory'.
Use this instead of "~/.emacs.d".