Index: src_plugins/dialogs/dlg_pref.h
===================================================================
--- src_plugins/dialogs/dlg_pref.h	(revision 35842)
+++ src_plugins/dialogs/dlg_pref.h	(revision 35843)
@@ -23,9 +23,14 @@
 	pref_confitem_t *cnext; /* linked list for conf callback - should be NULL initially */
 };
 
+typedef enum Rnd_pref_tab_flag_e {
+	Rnd_PREFTAB_NEEDS_ROLE
+} Rnd_pref_tab_flag_t;
+
 typedef struct Rnd_pref_tab_hook_s Rnd_pref_tab_hook_t;
 struct Rnd_pref_tab_hook_s {
 	const char *tab_label;
+	unsigned long flags;                /* bitfield of Rnd_pref_tab_flag_t */
 
 	void (*open_cb)(pref_ctx_t *ctx);   /* called right after the dialog box is created */
 	void (*close_cb)(pref_ctx_t *ctx);  /* called from the dialog box is close_cb event */
Index: src_plugins/dialogs/dlg_pref_board.c
===================================================================
--- src_plugins/dialogs/dlg_pref_board.c	(revision 35842)
+++ src_plugins/dialogs/dlg_pref_board.c	(revision 35843)
@@ -100,7 +100,7 @@
 }
 
 static const Rnd_pref_tab_hook_t pref_board = {
-	"Board meta",
+	"Board meta", 0,
 	NULL, NULL,
 	pcb_dlg_pref_board_create,
 	pref_board_brd2dlg, pref_board_brd2dlg  /* board change, meta change */
Index: src_plugins/dialogs/dlg_pref_color.c
===================================================================
--- src_plugins/dialogs/dlg_pref_color.c	(revision 35842)
+++ src_plugins/dialogs/dlg_pref_color.c	(revision 35843)
@@ -169,7 +169,7 @@
 }
 
 static const Rnd_pref_tab_hook_t pref_color = {
-	"Colors",
+	"Colors", Rnd_PREFTAB_NEEDS_ROLE,
 	pcb_dlg_pref_color_open, pcb_dlg_pref_color_close,
 	pcb_dlg_pref_color_create,
 	pref_color_brd2dlg, pref_color_brd2dlg  /* board change, meta change */
Index: src_plugins/dialogs/dlg_pref_general.c
===================================================================
--- src_plugins/dialogs/dlg_pref_general.c	(revision 35842)
+++ src_plugins/dialogs/dlg_pref_general.c	(revision 35843)
@@ -93,7 +93,7 @@
 }
 
 static const Rnd_pref_tab_hook_t pref_general = {
-	"General",
+	"General", Rnd_PREFTAB_NEEDS_ROLE,
 	NULL, pcb_dlg_pref_general_close,
 	pcb_dlg_pref_general_create,
 	NULL, NULL
Index: src_plugins/dialogs/dlg_pref_layer.c
===================================================================
--- src_plugins/dialogs/dlg_pref_layer.c	(revision 35842)
+++ src_plugins/dialogs/dlg_pref_layer.c	(revision 35843)
@@ -61,7 +61,7 @@
 }
 
 static const Rnd_pref_tab_hook_t pref_layer = {
-	"Layers",
+	"Layers", 0,
 	NULL, NULL,
 	pcb_dlg_pref_layer_create,
 	NULL, NULL
Index: src_plugins/dialogs/dlg_pref_lib.c
===================================================================
--- src_plugins/dialogs/dlg_pref_lib.c	(revision 35842)
+++ src_plugins/dialogs/dlg_pref_lib.c	(revision 35843)
@@ -468,7 +468,7 @@
 }
 
 static const Rnd_pref_tab_hook_t pref_lib = {
-	"Library",
+	"Library", Rnd_PREFTAB_NEEDS_ROLE,
 	pcb_dlg_pref_lib_open, pcb_dlg_pref_lib_close,
 	pcb_dlg_pref_lib_create,
 	NULL, NULL
Index: src_plugins/dialogs/dlg_pref_sizes.c
===================================================================
--- src_plugins/dialogs/dlg_pref_sizes.c	(revision 35842)
+++ src_plugins/dialogs/dlg_pref_sizes.c	(revision 35843)
@@ -158,7 +158,7 @@
 }
 
 static const Rnd_pref_tab_hook_t pref_sizes = {
-	"Sizes & DRC",
+	"Sizes & DRC", Rnd_PREFTAB_NEEDS_ROLE,
 	NULL, pcb_dlg_pref_sizes_close,
 	pcb_dlg_pref_sizes_create,
 	pref_sizes_brd2dlg, pref_sizes_brd2dlg  /* board change, meta change */