Hanging punctuation, and the margin nobody notices
A quotation mark at the start of a line makes the margin look dented. The fix is four hundred years old.
Tag: #margins
The golden canon, and the arithmetic under it
Medieval scribes placed a text block by drawing nine lines and reading the answer off the diagonals. No measuring, no arithmetic, no taste required — and the proportions that fall out are still the best default anybody has for a page of running text.