[Haskell-beginners] trees on Haskell : Do I understand it right ?

[Roelof Wobben]

Hello,

Suppose we have this definition of a tree :

data MessageTree = Leaf
                  | Node MessageTree LogMessage MessageTree
   deriving (Show, Eq)

let Message  = LogMessage "E 1 this is a test error"
let Message = LogMessage "e 2 this is the second test error "

As I understand it right I can make the first entry like this : 
first_entry = Node Messagetree  Message Messagetree

And the second one like this second_entry = Node Message Messagetree 
Message2 Messagetree ??

Roelof