Note that the predefined variable 'stdscr' in the curses library must explicitly be set in the BaCon program.

This can be done by assigning the returnvalue from 'initscr':
    stdscr = initscr()

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Good reference guides can be found here:

 - http://tldp.org/HOWTO/NCURSES-Programming-HOWTO/
 - http://invisible-island.net/ncurses/man/ncurses.3x.html (manpages online)