Given the stаtements belоw, write T (true) оr F (fаlse). CRC stаnds fоr class, repository, and coding. A package is a container for other UML things, such as use cases or classes. They show partitioning, or which classes are grouped into a subsystem. Abstract classes are general classes or superclasses, and may not have any direct objects themselves. UML can only be used for software development. UML diagrams are primarily intended for technical documentation and are not useful for communication with stakeholders.