deferred class
	IO_MEDIUM

Ancestors
	DISPOSABLE*
	STRING_HANDLER

Descendants
	FILE*
	SOCKET
	STREAM

Clients
	IO_MEDIUM*
	KL_INPUT_STREAM_ROUTINES
	KL_OUTPUT_STREAM_ROUTINES
	MEDIUM_POLLER
	POLL_COMMAND*
	POLL_MASK
	SED_MEDIUM_READER_WRITER
	SED_MEDIUM_READER_WRITER_1
	STORABLE
	WEL_DIB

Suppliers
	BOOLEAN
	INTEGER_32
	IO_MEDIUM*
	MANAGED_POINTER