+** The functions in rect.el have been almost completely rewritten...
+to avoid inserting undesirable spaces, notably at the end of lines.
+Two typical examples of this old behavior are `string-rectangle', which filled
+all lines up to the right side of the rectangle, and `clear-rectangle', which
+filled even empty lines up to the left side.
+
+This is not the case any more. All these functions have been rewritten to
+avoid inserting unwanted spaces, and an optional prefix now allows them to
+behave the old way.
+
+As a side effect, `move-to-column' now also accepts 'coerce as its second
+argument, meaning that the line shouldn't be filled if its too short to reach
+the desired column.
+
+** You can now customize and save comments for faces and variables.
+
+In Custom buffers, a new menu entry allows you to add and edit a comment.
+Comments for variables can also be assigned by calling
+`customize-set-(value|variable)' with a prefix argument.
+