When activated, this module forces the 'all' parameter to taxonomy term URLs.
For example, let's assume your site have this vocabulary:
- Term 1
-- Term 2
-- Term 3
- Term 4
-- Term 5
-- Term 6
If you go to taxonomy/term/1, then you see all nodes in Term 1 listed, but NOT nodes in Term 2 and Term 3.
If you want to see all nodes in Term 1, Term 2 and Term 3 in a single page, you have to go to taxonomy/term/1/all.
By default, the 'all' parameter is never set by drupal core. This module solves this by simply implementing a hook_init() function that catch if requested page is taxonomy/term/x and transform it into taxonomy/term/x/all.