#include <string>
#include <list>
-#include STL_FSTREAM
-
-SG_USING_STD(list);
-SG_USING_STD(string);
-SG_USING_STD(getline);
-#if !defined (SG_HAVE_NATIVE_SGI_COMPILERS)
-SG_USING_STD(ifstream);
-#endif
+#include <fstream>
+
+using std::list;
+using std::string;
+using std::getline;
+using std::ifstream;
#define DELIMITERS " \t"
#define COMMENT "#"