Index: trunk/src/layer.c
===================================================================
--- trunk/src/layer.c	(revision 19110)
+++ trunk/src/layer.c	(revision 19111)
@@ -37,20 +37,21 @@
 #include "event.h"
 #include "layer_ui.h"
 #include "layer_vis.h"
+#include "funchash_core.h"
 #include "rtree.h"
 #include "obj_pstk_inlines.h"
 #include "list_common.h"
 
 pcb_virt_layer_t pcb_virt_layers[] = {
-	{"invisible",      PCB_LYT_VIRTUAL + 1, PCB_LYT_VIRTUAL | PCB_LYT_INVIS },
-	{"rats",           PCB_LYT_VIRTUAL + 2, PCB_LYT_VIRTUAL | PCB_LYT_RAT },
-	{"topassembly",    PCB_LYT_VIRTUAL + 3, PCB_LYT_VIRTUAL | PCB_LYT_ASSY | PCB_LYT_TOP},
-	{"bottomassembly", PCB_LYT_VIRTUAL + 4, PCB_LYT_VIRTUAL | PCB_LYT_ASSY | PCB_LYT_BOTTOM },
-	{"fab",            PCB_LYT_VIRTUAL + 5, PCB_LYT_VIRTUAL | PCB_LYT_FAB  | PCB_LYT_LOGICAL },
-	{"plated-drill",   PCB_LYT_VIRTUAL + 6, PCB_LYT_VIRTUAL | PCB_LYT_PDRILL },
-	{"unplated-drill", PCB_LYT_VIRTUAL + 7, PCB_LYT_VIRTUAL | PCB_LYT_UDRILL },
-	{"csect",          PCB_LYT_VIRTUAL + 8, PCB_LYT_VIRTUAL | PCB_LYT_CSECT | PCB_LYT_LOGICAL },
-	{"dialog",         PCB_LYT_VIRTUAL + 9, PCB_LYT_VIRTUAL | PCB_LYT_DIALOG | PCB_LYT_LOGICAL | PCB_LYT_NOEXPORT },
+	{"invisible",      PCB_LYT_VIRTUAL + 1, PCB_LYT_VIRTUAL | PCB_LYT_INVIS, NULL, -1 },
+	{"rats",           PCB_LYT_VIRTUAL + 2, PCB_LYT_VIRTUAL | PCB_LYT_RAT, NULL, -1 },
+	{"topassembly",    PCB_LYT_VIRTUAL + 3, PCB_LYT_VIRTUAL | PCB_LYT_ASSY | PCB_LYT_TOP, "assy", F_assy },
+	{"bottomassembly", PCB_LYT_VIRTUAL + 4, PCB_LYT_VIRTUAL | PCB_LYT_ASSY | PCB_LYT_BOTTOM, "assy", F_assy },
+	{"fab",            PCB_LYT_VIRTUAL + 5, PCB_LYT_VIRTUAL | PCB_LYT_FAB  | PCB_LYT_LOGICAL, "fab", F_fab },
+	{"plated-drill",   PCB_LYT_VIRTUAL + 6, PCB_LYT_VIRTUAL | PCB_LYT_PDRILL, "plated", F_plated },
+	{"unplated-drill", PCB_LYT_VIRTUAL + 7, PCB_LYT_VIRTUAL | PCB_LYT_UDRILL, "unplated", F_unplated },
+	{"csect",          PCB_LYT_VIRTUAL + 8, PCB_LYT_VIRTUAL | PCB_LYT_CSECT | PCB_LYT_LOGICAL, "csect", F_csect },
+	{"dialog",         PCB_LYT_VIRTUAL + 9, PCB_LYT_VIRTUAL | PCB_LYT_DIALOG | PCB_LYT_LOGICAL | PCB_LYT_NOEXPORT, NULL, -1 },
 	{ NULL, 0 },
 };
 
Index: trunk/src/layer.h
===================================================================
--- trunk/src/layer.h	(revision 19110)
+++ trunk/src/layer.h	(revision 19111)
@@ -330,6 +330,8 @@
 	char *name;
 	pcb_layer_id_t new_id;
 	pcb_layer_type_t type;
+	const char *purpose;
+	int purpi;
 } pcb_virt_layer_t;
 
 extern pcb_virt_layer_t pcb_virt_layers[];