Added functions from POSIX standard.

doc/posix1003.1/ch07.t

@@ -7,37 +7,88 @@
 @c
 
 @chapter Device- and Class-Specific Functions
+
 @section General Terminal Interface
+
 @subsection Interface Characteristics
+
 @subsubsection Opening a Terminal Device File
+
 @subsubsection Process Groups (TTY)
+
 @subsubsection The Controlling Terminal
+
 @subsubsection Terminal Access Control
+
 @subsubsection Input Processing and Reading Data
+
 @subsubsection Canonical Mode Input Processing
+
 @subsubsection Noncanonical Mode Input Processing
+
 @subsubsection Writing Data and Output Processing
+
 @subsubsection Special Characters
+
 @subsubsection Modem Disconnect
+
 @subsubsection Closing a Terminal Device File
+
 @subsection Parameters That Can Be Set
+
 @subsubsection termios Structure
+
 @subsubsection Input Modes
+
 @subsubsection Output Modes
+
 @subsubsection Control Modes
+
 @subsubsection Local Modes
+
 @subsubsection Special Control Characters
+
 @subsection Baud Rate Values
+
 @subsubsection Baud Rate Functions
+
 @subsubsection Synopsis
+
 @subsubsection Description
+
 @subsubsection Returns
+
 @subsubsection Errors
+
 @subsubsection Cross-References
+
 @section General Terminal Interface Control Functions
+
 @subsection Get and Set State
+
+@example
+tcgetattr()
+tcsetattr()
+@end example
+
 @subsection Line Control Functions
+
+@example
+tcsendbreak()
+tcdrain()
+tcflush()
+tcflow()
+@end example
+
 @subsection Get Foreground Process Group ID
+
+@example
+tcgetprgrp()
+@end example
+
 @subsection Set Foreground Process Group ID
 
+@example
+tcsetprgrp()
+@end example