In a very 'Easter-Egg-ish' post, Grant Richins (a developer on the C# Compiler Team), explains a configuration option of 'alink.dll'.
So everybody hopefully knows you can put a star "*" for either of the last 2 version numbers of the AssemblyVersion attribute. ALink will then translate that into the days and minutes since January 1st, 2000. Well, here comes the feature: What if you don't like January 1st 2000? Well, you can change it.
Personally, this seems of dubious worth, which might explain the lack of documentation, but if this option is useful to you, check out his post for all the details.