Terminal Modes
==============
This section describes the various terminal attributes that control
how input and output are done. The functions, data structures, and
symbolic constants are all declared in the header file `termios.h'.
Don't confuse terminal attributes with file attributes. A device
special file which is associated with a terminal has file attributes as
described in Note:File Attributes. These are unrelated to the
attributes of the terminal device itself, which are discussed in this
section.