How is that difficult? Most text editors support word wrapping and syntax highlighting.
> avoid rebuilding your rendered document too often. It's slow, it takes you out of the activity of writing, and it throws up lots of opportunities to get distracted by some rendering nit that you didn't realise would happen.
I wrote a 300+ page PhD thesis with a lot of mathematical proofs, 12+ years ago on a computer that was a few years old. It wasn't that slow.
But then again, the whole point of using something like LaTeX is that you can focus on the text and not how it looks when writing it.
> If you use syntax highlighting in your editor, take a long, hard look at what it's drawing attention to. It's not your text, that's for sure. Is it worth having it on? Consider turning it off. Or (yak shaving beware!) tweak it to de-emphasise things, instead of emphasising them.
Again, I never found this to be a problem, even with documents that were full of mathematical expressions.