- Environmental condition constants
-*/
-#define HEAT_UNDEFINED (-0x7fff-1)
-#define HUMIDITY_UNDEFINED (-0x7fff-1)
+ * GUI related things
+ */
+#define LEGACY_SCALING (2./3.)
+#define DEFAULT_FONT_SIZE (13.0 / LEGACY_SCALING)
+#define DEFAULT_IMGSIZE (48.0)
+#define DEFAULT_XSPACING ((15.0 + (1.0 / 3.0)))
+#define DEFAULT_YSPACING (9.0)