         charObj = @createChar char
         pusher (position + offset), charObj
 
-  deleteHelper = (position, length = 1) ->
+  deleteHelper: (position, length = 1) ->
     (@_get "characters").delete position, length
 
-  createChar = (char, left=[], right=[]) ->
-    return new Y.Object char: char
+  createChar: (char, left=[], right=[]) ->
+    return new Y.Object {
+      char: char
       left: left
       right: right
+    }
 
   # return the index of a character
   # @param character [Y.Object] the character to look for
   #TODO: check that it works
-  indexOf = (character) ->
+  indexOf: (character) ->
     (@_get "characters").val().indexOf(character)
 
   # pass deltas to the character instance


      if delta.insert?
        @insertHelper position, delta.insert
        from = @val position
        to = @val (position + delta.insert.length)
        operation.call selections, from, to, delta.attributes
        return position + delta.insert.length



      else if delta.retain?
        retain = parseInt delta.retain
        from = val position
        to = val (position + retain)

        operation.call selections, from, to, delta.attributes
        return position + retain

  insertHelper: (position, content) ->
    pusher = (position, char) =>
      if @_model?
        (@_get "characters").insert position, char
