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* Incompatible Lisp Changes in Emacs 24.3
+** (random) by default now returns a different random sequence in
+every Emacs run. Use (random S), where S is a string, to set the
+random seed to a value based on S, in order to get a repeatable
+sequence in later calls.
+
** The function `x-select-font' can return a font spec, instead of a
font name as a string. Whether it returns a font spec or a font name
depends on the graphical library.