In vim, I prefer all of my splits, both horizontal and vertical, to be :belowright. I don't know why, it just feels more natural to me.
It gets annoying to :bel sp foo.txt instead of just :sp foo.txt all the time. Similarly with :bel vs. I have some workarounds (namely map <leader>s :bel sp), but my life would be made easier if there were a way to let vim know that :belowright should be the default for all splits unless otherwise specified.
Is there such an option? (I'm not above applying a small patch and recompiling.)
Edit: Found it.
The answer is set splitbelow and set splitright. Should have poked around for ten more minutes before asking...