C
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Look in the Manx manual under Library Overview, page libov.17 where it
describes console I/O. The CONSOLE (keyboard) is normally buffered by the
system so you can't get a single character until you "flush" the buffer with
a CR. The function ioctl(fd,cmd,stty) sets the mode of the console and can
be set for unbuffered I/O. Look on page lib.25 for a description.