Document native field calculations

I've come across a number of people with experience in other products (most often MS Project) that just want a reference list of how the in-built calculated fields are calculated.

If it could also include the rules for fields that default but can be over written (e.g. Actual Start) and explicitly listing fields that are only manually input (% complete) that would be great.

A one-stop reference for working through how Workfront calculates what it does.