Index: src_plugins/lib_polyhelp/topoly.c
===================================================================
--- src_plugins/lib_polyhelp/topoly.c	(revision 33211)
+++ src_plugins/lib_polyhelp/topoly.c	(revision 33212)
@@ -417,9 +417,10 @@
 	pctx.df = df;
 	vtp0_init(&pctx.pstks);
 
-	/* first search (and mark) all offending padstacks */
+	/* map: first search (and mark) all offending padstacks */
 	rnd_r_search(pcb->Data->padstack_tree, &poly->bbox_naked, NULL, pcb_topoly_check_pstk_on_outline_cb, &pctx, NULL);
 
+	/* apply: subtract all padstacks found while mapping */
 	for(n = 0; n < pctx.pstks.used; n++) {
 		pcb_pstk_t *ps = pctx.pstks.array[n];
 		pcb_pstk_shape_t holetmp;