Intelligently show the last updated time of a page.
The theme/page type areas used to derive the update time are selectable, defaulting to 'Main', so its up to you whether you want to include other areas like Navigation, Header and Footer when deriving the last updated time.
There are multiple options for giving friendly interpretations of date/time (because I couldn't make up my mind which I liked most, so included all I found that were free to use). I have no intention of changing the algoritms in the third party code that has been used for these options (feel free to add further options).
CSS classes are attached to everything and spans added with classes for convenient theming.
It was originally developed on C5.4.1.1, works with 5.5+, and I have been advised it will work with with older versions at least as far back as 5.4.0.
The initial concept was sparked by http://www.weblicating.com/c5/date-last-edited/, but it has come a long way from there.