Don't forget double full-stops. An IPT "Management Board" (17 staff, only 2 of them my senior and most non-technical) delayed approval for a high priority job for AFG for 6 weeks because I'd put a double full-stop at the end of a sentence in my technical spec.
That's 17 staff, out of a 39-strong IPT, MoD could do without.
Moral of the story - have your work proof read by some-one else before you send it - that extra couple of hours can save you weeks. (The double full stop should have been picked up by a green wavy line in word. If not using word, then it is good practice to write in word first then cut and paste into other formats).
(Must check this before I send it tho')!