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Date: Mon, 1 Apr 2002 16:35:37 -0500
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From: DJ Delorie <dj AT delorie DOT com>
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	(emacduffie AT mediaone DOT net)
Subject: Re: Preprocessor directives
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If you compile with "-v" gcc will tell you which ones it's using for
your particular host.  For DJGPP, the two recommended ones are:

__MSDOS__ - most dos compilers define this, to tell you you're dealing
	with a dos-like filesystem.

__DJGPP__ - specific to DJGPP version 2 and higher.

BTW: djgpp has clrscr() to clear the screen.