Hello,
In 'admin/settings/date-time' the date/time format are named 'short', 'medium' and 'long' while the $type parameter in the format_date function (http://api.drupal.org/api/function/format_date/6) are named 'small', 'medium' and 'large'. Subtile, i know, but it took me +3hrs to find the reason why my theming wasn't working today...
Probably it's better to change the names on the settings page to not brake any APIs.
Comments
Comment #1
kscheirerLook like this is being worked on here #221006: Handbook is not up to date on format_date.
Marking this issue as Duplicate.