I just did a Google search for "one space or two" and got some 11,000 hits... so there's plenty out there to support whichever way you go. As you noted, Chicago says one, and the Australian Style Manual (6th edition, p117) also recommends a single space after punctuation such as commas and full stops--they insist on it after colons and semicolons. If your organisation is using Word, you can get the 'double space' users to set Word so that it converts two spaces after punctuation in to one (in Word 2003 go to Tools > Options > Spelling & Grammar tab, then click Settings in the Grammar section and change the settings in the "Require" group; you can also force a serial comma this way too). This question goes around almost all tech writing lists every few years and invariably results in list wars, so be warned... Rhonda Rhonda Bracey rhonda.bracey@xxxxxxxxxxxxxxxx http://www.cybertext.com.au <http://www.cybertext.com.au/> AuthorIT Certified Consultant ________________________________ From: austechwriter-bounce@xxxxxxxxxxxxx [mailto:austechwriter-bounce@xxxxxxxxxxxxx] On Behalf Of O'Connor, Deirdre [Beacon Technology] Sent: Friday, 18 January 2008 4:01 PM To: austechwriter@xxxxxxxxxxxxx Subject: atw: Extra spacing after full stop Can anyone provide a yes/no answer to the question of whether extra spacing between sentences should/shouldn't be used in Manual/Guideline/Standard type documentation? I find many professionals use two spaces after each full stop and as a Technical Writer this bothers me. After researching it (Chicago Manual of Style and various Google pages) I have found that it is not correct practice. Chicago Manual of Style: "2.12 Line spacing and word spacing For the hard copy, the entire text and, if possible, all extracts, notes, bibliography, index, and other material should be vertically double-spaced. A single character space, not two spaces, should be left after periods at the ends of sentences (both in manuscript and in final, published form) and after colons." I am writing up a Formatting Guide for my company and I would like to state that extra spacing should not be used as common practice but I would just like any other opinions/facts on this please. Thanks.