This command is only available in the tabular editor view of a watch list⮫ “Editor”. It appends a new line at the end of the list and and opens an edit field in column "name" for entering a new watch variable via the input assistant (see the note in Creating Watch Lists, Recipes⮫ “Note on using the input assistant in the watch- and recipe manager:”) or by typing⮫ “Creating watch lists, recipes”.