Create a new AttributeDefinition. id is the ID of the attribute. It must be unique within the PropertySet where it is used. name is a more descriptive text that will be used in report columns and the like. objClass is a reference to the class (not the object itself) of the attribute. The possible classes all have names ending in Attribute. inheritedFromParent is a boolean flag that needs to be true if the node can inherit the setting from the attribute of the parent node. inheritedFromProject is a boolen flag that needs to be true if the node can inherit the setting from an attribute in the global scope. scenarioSpecific is a boolean flag that is set to true if the attribute can have different values for each scenario. default is the default value that is set upon creation of the attribute.

[Source]

# File lib/taskjuggler/AttributeDefinition.rb, line 36
    def initialize(id, name, objClass, inheritedFromParent, inheritedFromProject,
                   scenarioSpecific, default, userDefined = false)
      @id = id
      @name = name
      @objClass = objClass
      @inheritedFromParent = inheritedFromParent
      @inheritedFromProject = inheritedFromProject
      @scenarioSpecific = scenarioSpecific
      @default = default
      @userDefined = userDefined
      # Prevent objects from being deep copied.
      freeze
    end