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+EventMachine (EM) can respond to keyboard events. This gives your event-driven
+programs the ability to respond to input from local users.
+
+Programming EM to handle keyboard input in Ruby is simplicity itself. Just use
+EventMachine#open_keyboard, and supply the name of a Ruby module or class that
+will receive the input:
+
+ require 'rubygems'
+ require 'eventmachine'
+
+ module MyKeyboardHandler
+ 	def receive_data keystrokes
+ 		puts "I received the following data from the keyboard: #{keystrokes}"
+ 	end
+ end
+
+ EM.run {
+ 	EM.open_keyboard(MyKeyboardHandler)
+ }
+
+If you want EM to send line-buffered keyboard input to your program, just
+include the LineText2 protocol module in your handler class or module:
+
+ require 'rubygems'
+ require 'eventmachine'
+
+ module MyKeyboardHandler
+ 	include EM::Protocols::LineText2
+ 	def receive_line data
+ 		puts "I received the following line from the keyboard: #{data}"
+ 	end
+ end
+
+ EM.run {
+ 	EM.open_keyboard(MyKeyboardHandler)
+ }
+
+As we said, simplicity itself. You can call EventMachine#open_keyboard at any
+time while the EM reactor loop is running. In other words, the method
+invocation may appear anywhere in an EventMachine#run block, or in any code
+invoked in the #run block.
+