(companion to the AP Stylebook)
..because characters is everything.
*For tone and content/delivery style, see the guide on Elijah Style Style & Journalism Ethics
Abbreviations — In digital content, periods in abbreviations should be optional, including Tweets, social media status, SMS (text messages), and online chat, but not titles. If the abbreviation is widely known the period takes unnecessary space. If the abbreviation is not known spell the entire word. etc, eg, viz, v, vs, ie.. are “known abbreviations”. Mr., Mrs., Sr., Jr., Dr., Rev., and other titles that precede a name abbreviations should receive periods so the reader is not distracted. Titles that follow a name, Ph.D. should only be used in an author line and not in article content unless it is the first mention and at the end of a sentence (to consolidate the period use). Within article content write “Dr. Lamvermeyer” in an author or quote citation or at the end of a sentence in article content “Famous things happen unexpectedly.” – Dathan M.