listing.addRow("<pool-name>", "The pool to which the directive will be " +
"added. You must have write permission on the cache pool "
+ "in order to add new directives.");
listing.addRow("-force",
"Skips checking of cache pool resource limits.");
listing.addRow("<replication>", "The cache replication factor to use. " +
"Defaults to 1.");
listing.addRow("<time-to-live>", "How long the directive is " +
"valid. Can be specified in minutes, hours, and days, e.g. " +
"30m, 4h, 2d. Valid units are [smhd]." +
" \"never\" indicates a directive that never expires." +