Normalize "blockquote" to HTML standards
In HTML, "blockquote" is used to pre-format text without using more advanced formatting and styles. It preserves and passes on everything you type within the container, including blank lines, which your blockquote does not, it deletes them, even if you put ">" at the beginning of a blank line. Also, it preserves extra spaces within the line, so that you can move text to the right using spaces. Your current blockquote does little more than apply a vertical line to the left of what you type, and remove blank lines that ordinary text would preserve.
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Ruv Draba commented
Athena, with markdown you can get free line-formatting if you begin each line with two spaces. (It took me a while to find this.)