*** All interactive commands that read a register (`copy-to-register', etc.)
now display a temporary window after `register-preview-delay' seconds
that summarizes existing registers. To disable this, set that option to nil.
+Interactive commands that read registers and want to make use of this
+should use `register-read-with-preview' to read register names.
+++
*** New command `C-x C-k x' (`kmacro-to-register') stores keyboard