801.1.2. Constants
801.1.2.1. FLAG_ABSTRACT
801.1.2.2. FLAG_FINAL
801.1.2.3. FLAG_STATIC
801.1.2.4. FLAG_PUBLIC
801.1.2.5. FLAG_PROTECTED
801.1.2.6. FLAG_PRIVATE
801.1.2.7. VISIBILITY_PUBLIC
801.1.2.8. VISIBILITY_PROTECTED
801.1.2.9. VISIBILITY_PRIVATE