A World Without "Whom"
Constants begin with an uppercase letter.
Joe Leo • The Well-Grounded Rubyist
Many of us were taught that no sentence should begin with “but.” If that’s what you learned, unlearn it—there’s no stronger word at the start.
William Zinsser • On Writing Well, 30th Anniversary Edition: An Informal Guide to Writing Nonfiction
A note on the ellipsis: it can include spaces if you'd like, as long as you pick one style and stick to it.
Daniel Calvisi • Story Maps: How to Write a GREAT Screenplay
No comma, however, should separate a noun from a restrictive term of identification.