RULES OF COMPOSITION
1. Spacing between words should appear as nearly uniform as possible, not only throughout the line but throughout the entire piece of work.
2. For solid, or unleaded matter, the em quad is used to indent the paragraph, and to follow a period except at the end of a line; the 3 to em space, between words in the absence of marks of punctuation other than the comma; the en quad, after a semi-colon and also after a colon when followed by a lower case letter, but when followed by a capital letter, the space should be slightly larger, perhaps two 3 to em spaces.
3. The indentation and spaces between words should vary according to the spaces between the lines. In case of two point leaded matter, the en quad should be used instead of the 3 to em space and other spaces should be correspondingly larger.
4. In justifying a line after the spacing has been done according to the above rules, spaces may be increased at kern letters, f, y, etc., between long words, and after semi-colons and colons; or reduced at slanting letters, at commas, and at the sides of small words. Spaces should be the same on both sides of very small words, and there should never be a greater variation in the spacing between ordinary words than the difference between an en quad and a 3 to em space.
5. Type should stand squarely on foot.
6. Divisions of words at the ends of the lines should be avoided wherever possible but when divided, the proper division of syllables should always be made.
7. Avoid dividing short words, or dividing words by cutting off short syllables at the first or last.
8. Do not loosen the clamp of the stick in order to make it possible to insert a space.
9. When in doubt about spelling, punctuation, capitalization, or syllabication, consult authority.
10. Save endless time and trouble by producing a clean proof the first time.
11. In making up, it is good form to have the first and last lines of a page full lines. So it is best not to have a paragraph begin with the first line or end with the last line of a page.