A variation of (replace:) which adds the attached hook's contents to the end of each target, rather than replacing it entirely.
(append: "Emily", "Em")[, my maid]adds “, my maid ” to the end of every occurrence of “Emily” or “Em”.
(append: ?dress)[ from happier days]adds “ from happier days” to the end of the
As this is a variation of (replace:), the rationale for this macro can be found in that macro's description. This provides the ability to append content to a target, building up text or amending it with an extra sentence or word, changing or revealing a deeper meaning.