Syntax: zero or more URL prefixes, each on a separate line
Excludes URLs beginning with any of the specified prefixes. The entire URL (hostname, path, and query) is used for comparison.
Examples:
http://www.mysite.com/scratch0/
http://www.mysite.com/scratch1/
http://www.mysite.com/books/t
See also Exclusions
4.4.10, Exclusion REX
4.5.16 and Exclude by Field
4.5.18.