spaces, and an optional prefix now allows them to behave the old way.
+++
-There is a new command M-x replace-rectangle.
+** The function `replace-rectangle' is an alias for `string-rectangle'.
-** `C-x r t' (string-rectangle) no longer deletes the existing
-rectangle contents before inserting the specified string on each line.
-The `replace-rectangle' command can be used if deletion is required.
+** The new command M-x string-insert-rectangle is like `string-rectangle',
+but inserts text instead of replacing it.
** The new command M-x query-replace-regexp-eval acts like
query-replace-regexp, but takes a Lisp expression which is evaluated