A generic morse-code practice utility for Unix systems.

Currently supported devices:
 Sun:    Sun workstation with audio hardware.
 HP:     HP9000s700 with audio hardware.
 X11:    The X11 window system. (Warning: not all X11 implementations handle
         duration and frequency of beeps properly!)
 Indigo: The SGI Indigo workstation. (See comments in beepIndigo.c about
         caveats and limitations.)
 Linux:  The IBM PC console speaker.
 AdLib:  AdLib/SoundBlaster FM chip. (See comments in beepAdLib.c about
         caveats and limitations.)
 OSS:    Open Sound System /dev/dsp device.  Also works with the newer 
         ALSA Linux sound system.

Adding a new device is as simple as creating a new implementation of the
beep.h interface. See beep*.[ch] for examples and documentation.
Please send any additions to the authors!!

A modified version of the program "QSO" by Paul J. Drongowski is also included.

For the character set this trainer generates, see the manual page.
Special Characters and Groups (never included, placed here for completeness) :

Multiplication sign  -..-  (the same as x, ISO 8859-1 code 215 ?)

"Mistake, delete the last word"  ........  (actually six or more dots are
used for this purpose, eight dots are recommended).

Cut Numbers :
1   .-      6   -...           1   .-      6   -....
2   ..-     7   --.            2   ..-     7   -...
3   .--     8   -..            3   ...-    8   -..
4   ...-    9   -.             4   ....-   9   -.
5   ...     0   -              5   .       0   -
