@Heliograph "Caja alta" and "baja" in Spanish ("case"="caja (box)" unless you are a IT translator, when you'll translate it as "caso (event)")
But I allways thought the case ("box") was about the letter bounding-box.
Spanish calligraphers use "Capitales" (capitals) instead, and grammars say "mayúsculas" and "minúsculas".

Not to forget smallcaps, which are mix of both.