Re:Talk Like a Texan: How Texans Use “Down,” “Out,” “Over,” ...
by acheron on Thursday February 08, 2018 @08:06PM
(#16337066)
(hence the phrase 'orient a map' — 'orient' just means 'east').
I used to think this too, but I did some research once and it appears the origin of "orient" the verb is unrelated to east-printed maps, and has more to do with building your church so that the altar faces east.
You're probably right, but I think it's relatively new; IIRC traditionally 'up' & 'down' refer to elevation. And of course maps used to be drawn with east, rather than north, at the top (hence the phrase 'orient a map' — 'orient' just means 'east').
I always use 'up' & 'down' for elevation, but I'm weird:-)