Trill cautionary note (bracketed)

Is there a way to create automatically or otherwise, a trill note cautionary like in the image attached?
trill2.png

Have a look at this thread:

https://www.steinberg.net/forums/viewtopic.php?f=246&t=103415&hilit=trill

Thank you! For those who stumble upon this thread, I’ll save you the extra click: As of yet, it can’t be done, and faking it is very messy.