to the value of `register--read-with-preview-function'.")
(defcustom register-use-preview 'traditional
- "Whether to show register preview when modifying registers.
+ "Whether register commands show preview of registers with non-nil values.
When set to t, show a preview buffer with navigation and highlighting.
-When set `insist', behave as with t, but allow exiting the minibuffer by
+When set to `insist', behave as with t, but allow exiting the minibuffer by
pressing the register name a second time. For example, press \\`a' to
select register \"a\", then press \\`a' again to exit the minibuffer.