Reformats selected text to use columns of a more readable width.
Displays a small purple indicator next to links which have accesskeys defined.
From wikipedia: "In a web browser an access key or accesskey allows a computer user to immediately jump to a specific part of a web page via the keyboard. They were introduced in 1999 and quickly achieved near-universal browser support."
See the wikipedia article on accesskeys (http://en.wikipedia.org/wiki/Accesskey) for how to use these on your version of Chrome.
(Adapted from this site's instructions for Firefox: http://blog.andrewbeacock.com/2007/06/firefox-hack-to-display-accesskey.html)