Instead of a list of rules, William Livingston Klein explains what punctuation marks actually do: how they group words and ideas, mark off parenthesis and restrictive or explanatory terms, and divide a sentence by semicolon and colon. Chapters on the dash and on where reason gives way to convention complete this revised edition of his 1896 book.
Still useful for writers and editors who want to understand punctuation rather than memorise it. Download the free EPUB.