"Lowlight" (as opposed to "highlight") annotations

[Sonyoyo]

I think that sometimes the annotations do not really add information for the reader. It would be great to be able to highlight that they are not important (italic, light gray, or somethings like that) or even to skip them if possible.

I could also delete them manually from the original file, but that may be quite annoying if the .mo file is updated during the process (annotation deletion has to be run again and again...).