Attribute
A structure that represents an SVS object's semantic definition. An SVS object is composed of a set of attributes. Each attribute is defined by its type (signed int, unsigned int and string), its value and its numerical code. An attribute code must be used as a definition of attribute's 'meaning' : Two attributes with same code have same signification. For example, a code may be reserved for defining objects' names. Note: Within a same object's class, attributes codes and types are related : two attributes of same code must have same type !