[cvs-nhc98] "No default for Main.Class13 at nopos.(861,[(366,865)])"

[Ian Lynagh]

What does

    No default for  Main.Class13 at nopos.(861,[(366,865)])

mean? The class looks like

    class Class13 a where
        class13_1 :: a -> Int
        class13_2 :: String

followed by a nestable comment and then another class.


Thanks
Ian