jaredquinn/concrete5 — comment on commit 7dc008a33993417fd81fe38984e4dbe419f86090
File:  line 0
By jaredquinn:

To enable the site-wide flat URL structure add the following line to config/site.php:

define('PRETTY_FLAT_URLS', true);

This also intentionally does not touch single pages, as they specify their URL on install and will probably expect to be found at their installed location. Previous URLs will not be modified; however the short version name will still work but duplicates may exist in which case only the first will be accessed. Updating the page properties/Aliases & Canonical URL of any page will recursively update all children.