Index: trunk/src/layer_grp.c
===================================================================
--- trunk/src/layer_grp.c	(revision 8594)
+++ trunk/src/layer_grp.c	(revision 8595)
@@ -637,3 +637,15 @@
 	static pcb_layer_id_t cache = -1;
 	return pcb_layergrp_get_cached(&cache, PCB_LYT_TOP, PCB_LYT_PASTE);
 }
+
+pcb_layergrp_id_t pcb_layergrp_get_bottom_silk()
+{
+	static pcb_layer_id_t cache = -1;
+	return pcb_layergrp_get_cached(&cache, PCB_LYT_BOTTOM, PCB_LYT_SILK);
+}
+
+pcb_layergrp_id_t pcb_layergrp_get_top_silk()
+{
+	static pcb_layer_id_t cache = -1;
+	return pcb_layergrp_get_cached(&cache, PCB_LYT_TOP, PCB_LYT_SILK);
+}
Index: trunk/src/layer_grp.h
===================================================================
--- trunk/src/layer_grp.h	(revision 8594)
+++ trunk/src/layer_grp.h	(revision 8595)
@@ -152,5 +152,7 @@
 pcb_layergrp_id_t pcb_layergrp_get_top_mask();
 pcb_layergrp_id_t pcb_layergrp_get_bottom_paste();
 pcb_layergrp_id_t pcb_layergrp_get_top_paste();
+pcb_layergrp_id_t pcb_layergrp_get_bottom_silk();
+pcb_layergrp_id_t pcb_layergrp_get_top_silk();
 
 #endif