Atoms can contain any character if they are enclosed within single quotes and an escape convention exists which allows any character to be used within an atom. Haskell is a standardized, general-purpose purely functional programming language, with non-strict semantics and strong static typing. Where are my pants? The syntax {D1,D2,...,Dn} denotes a tuple whose arguments are D1, D2, ... Dn. Tuples are containers for a fixed number of Erlang data types.
