The following parameters could be set for the category pages of your site:

1. Category URLs: how to format the URL of the category directory
   • Use param: cat ID. E-g: http://example.com/blog1.php?cat=123
   • Use extra-path: sub-category. E-g: http://example.com/blog1.php/subcat/
   • Use extra-path: category path. E-g: http:/example.com/blog1.php/cat/subcat/
2. Prefix: let you add a custom prefix before the category Slug in the URL. Only applicable if you selected one of the "Use extra-path" options in the Category URLs parameter. E-g: use http://example.com/custom-prefix/category instead of http://example.com/cat/subcat/
3. Make canonical:
   • 301 redirect to canonical URL when possible: if the detected canonical URL of the category is different from the current URL, a 301 redirect will be done.
   • Use rel="canonical" if not 301 redirected: in case of the 301 redirect is unavailable, a canonical link element is inserted in the page.
4. Indexing: let you decide if you want to keep robots away of the category pages.
5. Post contents:
   • Post excerpts: display only the excerpt of each post.
   • Standard post contents (stopping at "[teaserbreak]"): display only the teaser of each post.
   • Full post contents (including after "[teaserbreak]"): display the whole content of each post.
6. Posts per page: let you decide how many post whould you like to display on each page of the directory.
7. Category directory: indexing control (reserved for future use).
8. Meta description: use category description as meta description for category pages.