Several of us that work on docs are old school vim users*
While in insert mode you can use these digraphs:
Setup | Sequence | Inserts |
---|---|---|
default | Control-K space space | non breaking space |
default | Control-K < < | « |
default | Control-K > > | » |
dig nl 9252 " SYMBOL FOR NEWLINE |
Control-K n l |  |
If not default, add the dig lines above to your ~/.vimrc
.
For a full list of digraphs, see https://vimdoc.sourceforge.net/htmldoc/digraph.html, look for "digraph table".
* Listen, I learned how to use vi on the MTS system at RPI back in the 80s, I can't not use it at this point.