#ifdef SG_HAVE_STD_INCLUDES
# include <istream>
-#elif defined( FG_HAVE_NATIVE_SGI_COMPILERS )
+#elif defined( SG_HAVE_NATIVE_SGI_COMPILERS )
# include <iostream.h>
#elif defined( __BORLANDC__ )
# include <iostream>
# include <istream.h>
#endif
-#if ! defined( FG_HAVE_NATIVE_SGI_COMPILERS )
-FG_USING_STD(istream);
+#if ! defined( SG_HAVE_NATIVE_SGI_COMPILERS )
+SG_USING_STD(istream);
#endif
#include STL_STRING
-FG_USING_STD(string);
+SG_USING_STD(string);
class FGFix {