This entity is 
not in the  
FGD by default.
It should not be put directly in a map because both are useless for level creators. 
 
handle_test and handle_dummy  are   logical entities  available in all 
 Source games. Both was created to test regarding the networking of entities.
Developers comment in test_ehandle.cpp:
In this test, the server makes an entity (call it A) that has an EHANDLE to another entity (call it B). Intitially, A is sent to the client but B is not. Later, the server decides to send B to the client too. At that point, without resending A's EHANDLE, the client's EHANDLE should access B.
A means handle_test, B means handle_dummy.
Console commands
	
		| Cvar/Command | 
		Parameters or default value | 
		Descriptor | 
		Effect | 
	
		| Test_EHandle | 
		 | 
		void
			 | 
		This command runs the test. Running this command again will transmit the second entity. |