Search Appliance SBE
Syntax: an HTTP URL to a plain text file (not HTML)
This may be used to specify the URL for a plain text file containing URLs for individual pages. In the file, the list of URLs can be one URL per line (preferred) or delimited by any number of spaces.
Pages removed from the file will not be removed from the database until the next New walk.
See also Single page 3.5.9.