When did UDFs get introduced to SQL Server?

Question

Can anyone out there remember in which version of SQL server UDFs were introduced?

EDIT: Thanks guys, looks like it was SQL 2000, I had thought it earlier. Thinking about it now I do remember those days of doing nasty workarounds and just waiting for the next version...

http://msdn.microsoft.com/en-us/library/aa214363(SQL.80).aspx

Answer 1

They were introduced in SQL Server 2000

Answer 2

SQL Server 2000 (link to white paper)

Answer 3

I think it was SQL Server 2000