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I read your other question about capitalizing directions or not, but here's a follow up question: what about when one is traveling in a particular direction, say northbound. Is that capitalized ever, or not? What about when one is looking South? Is that capitalized ever or not. What is the rule on that? Thanks.
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not capped ... as discussed earlier, directions are capped when referring to fairly specific regions.

i used to live in the South (meaning in a southern state of the US)