-#define mm2inches 0.0393700787402
-#define inches2mm 25.4
-#define mm2twips 56.6929133859
-#define twips2mm 0.0176388888889
-#define mm2pt 2.83464566929
-#define pt2mm 0.352777777778
-#if !defined( __DARWIN__ ) || defined(__MWERKS__)
-#ifndef M_PI
-const double M_PI = 3.14159265358979 ;
-#endif
-#endif