add continue text to staff text

I would like to show the range of notes to which staff text applies. Specifically a "calando" at the end of a score. The engraving I am looking at shows dashes after the word and continues for the full measure. The continue text looks like the dashed text following a dim or cresc. but I cannot find a way to add this to system or staff text and do not find a line that looks like this in the palette to add it as a line. Maybe I missed something when I searched the forums, but that could have been an issue of how I phrased the query.