Site URL: Strip session id Remove session IDs from pages.
Last modified: The date of last modification of the file. This date should be in YYYY-MM-DD format.

Change frequency: always hourly daily weekly monthly yearly never How frequently the page is likely to change. Priority 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 The priority of this URL relative to other URL's on your site. Valid values range from 0.0 to 1.0. The default priority of a page is 0.5. Search engines use this information when selecting between URL's on the same site