The default text of the cached robots.txt file is shown below. If you have made changes to this file since we downloaded it, the text we show may be different than the latest version. We check for a new robots.txt file approximately once per day. 
Leave this text as is to see if the cached robots.txt file blocks access to specific URLs. Modify this text to see how changes to the robots.txt file would change access to specific URLs. See robotstxt.org for more information on robots.txt syntax. 

Note that when you modify this text, you are not changing the robots.txt file that is located on the site. Once you have tested your robots.txt changes here, make the appropriate changes to the file on the site.