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+% Usage: mf '\mode=what_ever_mode; \input mode2dpi'
+
+let myexit = primitive_end_;
+mode_setup;
+string xdpi;
+xdpi := decimal round pixels_per_inch;
+message "XDPI = " & xdpi;
+string ydpi;
+ydpi := decimal round (pixels_per_inch * aspect_ratio);
+message "YDPI = " & ydpi;
+fontmaking := 0;
+myexit;