Added a few example based on the obsolete libraries (v0).

Updated the tutorial example.
Added WSF_MESSAGE_EXECUTION.

examples/tutorial/step_2/hello/src/hello_execution.e

@@ -0,0 +1,35 @@
+note
+	description: "[
+			Request execution for Current application.
+			Implement `execute' based on `request' and `response'.
+		]"
+	author: "$Author$"
+	date: "$Date$"
+	revision: "$Revision$"
+
+class
+	HELLO_EXECUTION
+
+inherit
+	WSF_EXECUTION
+
+create
+	make
+
+feature -- Execution
+
+	execute
+		local
+			msg: WSF_PAGE_RESPONSE
+		do
+			create msg.make_with_body ("Hello World")
+			response.send (msg)
+
+			--| alternative would have been more low level
+			--| by setting the content type, and the content length which is 11 for "Hello World"
+			--	response.header.put_content_type_text_plain
+			--	response.header.put_content_length (11)
+			--	response.put_string ("Hello World")
+		end
+
+end