API question(s)

Following this unanswered question: http://sagecity.na.sage.com/support_communities/sage_timeslips/f/51/t/69294.aspx

In 2013, is the API truly a Delphi-based Win32 dll?

Are there any resources besides the relatively hard to navigation tsapi.hlp?

Is there a .NET api? If not, is there a good way (from .NET) to integrate with the TS database?