Index: layer_grp.h
===================================================================
--- layer_grp.h	(revision 27254)
+++ layer_grp.h	(revision 27255)
@@ -53,6 +53,9 @@
 
 	/* internal: temporary states */
 	int intern_id;                         /* for the old layer import mechanism */
+
+	/* internal: attribute cache */
+	unsigned init_invis:1;                 /* layer group should be inivisible by default (e.g. after load) */
 };