One of the most over-looked LabVIEW VI Properties, mentioned in all of the "Good LabVIEW Coding Practices", is the one called "Documentation", where you describe what the VI does, and its Inputs and Outputs (at a minimum). [NI Examples are certainly guilty of this].
I've been trying (and mostly succeeding) to ensure that every VI I write has such Documentation. Sometimes I make a mis-type, highlight "bad" parts, and hit the "Delete" (or backspace), then say "Oops, erased too much, let's undo that with ^Z". Except there is no Undo, or at least it isn't bound to ^Z here.
I can find no other place in LabVIEW that doesn't allow ^Z to replace deleted text. It works in String Constants, in Labels (whether Free Labels or names for Controls/Indicators), and other places.
To encourage LabVIEW Developers to use the Documentation property, can you please allow us to "undo a boo-boo" with ^Z?