class attribute_1; attribute_2; attribute_3; .... attribute_N; end
There are two types of attributes, those for the members of the class and those for the class itself. They are called member attributes and collective attributes respectively.
To define a member attribute, one needs to specify the type of access control
access_control_type identifier [= default_value [in domain]]where the specification of default_value and domain is optional. To define a collective attribute, one starts directly with the name of the attribute (which currently can only be one of new, super, or title).