UPPER-CASE and lower-caseThese terms originated from the common layouts of the shallow drawers called type cases used to hold the movable type for letterpress printing. Traditionally, the capital letters were stored in a separate shallow tray or "case" that was located above the case that held the small letters.
Info from https://en.wikipedia.org/wiki/Letter_case
Original image from https://upload.wikimedia.org/wikipedia/commons/1/1a/Upper_case_and_lower_case_types.jpg
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