Index: obj_common.h
===================================================================
--- obj_common.h	(revision 31074)
+++ obj_common.h	(revision 31075)
@@ -299,6 +299,9 @@
 #define pcb_obj_clearance_p2(obj, in_poly) \
 	(RND_MAX((obj)->Clearance, ((in_poly)->enforce_clearance)*2))
 
+#define pcb_obj_clearance_o05(obj, in_poly) \
+	(RND_MAX((obj)->Clearance/2, ((in_poly)->enforce_clearance)))
+
 #define pcb_obj_id_reg(data, obj) \
 	do { \
 		pcb_any_obj_t *__obj__ = (pcb_any_obj_t *)(obj); \