Jerry O'Brien thinks this is interesting: :set foldcolumns= From Folding and Outlining (Outline Mode) from Learning the vi and Vim Editors, 7th Edition by Linda Lamb, Elbert Hannah, Arnold Robbins Publisher: O'Reilly Media, Inc. Released: July 2008 Note typo: use foldcolumn (singular) Share this highlight http://www.safaribooksonline.com/a/learning-the-vi/838770/ Twitter Facebook Google Plus Email Get Instant Access Now Start a Free Trial Learn about Safari for Business Have an account? Sign in. Minimise Unlock the rest of Learning the vi and Vim Editors, 7th Edition and 30,000 other books and videos By clicking this box, you confirm that you have read and agree to the terms and conditions of our Membership Agreement, and you understand that when your trial period ends, you will be required to provide billing information if you wish to continue using the service. Unlock the rest of this book Start a Free 10-Day Trial loading Learn about Safari for Business Have an account? Sign in.