D13961.1793869289.diff
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	Index: book.xml.moresio
	===================================================================
	--- book.xml.moresio
	+++ book.xml.moresio
	@@ -6345,28 +6345,7 @@
	</question>

	<answer>
	- <para>The third serial port, <filename>sio2</filename>,
	- or <filename>COM3</filename>,
	- is on <filename>/dev/cuad2</filename> for dial-out
	- devices, and on <filename>/dev/ttyd2</filename> for
	- dial-in devices. What is the difference between these two
	- classes of devices?</para>
	-
	- <para>When
	- opening <filename>/dev/ttydX</filename> in blocking mode,
	- a process will wait for the corresponding
	- <filename>cuadX</filename> device to become inactive, and
	- then wait for the carrier detect line to go active. When
	- the <filename>cuadX</filename> device is opened, it makes
	- sure the serial port is not already in use by the
	- <filename>ttydX</filename> device. If the port is
	- available, it steals it from the
	- <filename>ttydX</filename> device. Also, the
	- <filename>cuadX</filename> device does not care about
	- carrier detect. With this scheme and an auto-answer
	- modem, remote users can log in and local users can still
	- dial out with the same modem and the system will take care
	- of all the conflicts.</para>
	+ <para>Need to figure this out</para>
	</answer>
	</qandaentry>