Index: obj_common.c
===================================================================
--- obj_common.c	(revision 28835)
+++ obj_common.c	(revision 28836)
@@ -235,6 +235,11 @@
 		obj->noexport = 1;
 		obj->noexport_named = (name[8] == ':');
 	}
+	else if (strncmp(name, "extobj::", 8) == 0) {
+		const char *arg = name+8;
+		if (strcmp(arg, "role") == 0)
+			obj->extobj_role = value;
+	}
 }
 
 const char *pcb_obj_id_invalid(const char *id)