Index: query_exec.h
===================================================================
--- query_exec.h	(revision 33124)
+++ query_exec.h	(revision 33125)
@@ -52,9 +52,9 @@
 	htpi_t obj2lenseg_cc; /* (pcb_any_obj_t *) object -> connection-counter (how many different objects are connected) */
 	vtp0_t obj2lenseg_free; /* delayed free of obj2lenseg_cc objects */
 	vtp0_t tmplst;        /* may be reused in a function call to save on allocation; always clear it at the end of the fnc */
-	htpp_t layer_setup_precomp;
-	vtp0_t layer_setup_netobjs;
-	void *layer_setup_res_cache;
+	htpp_t layer_setup_precomp;  /* fnc layer_setup(): cache precompiled conditions */
+	vtp0_t layer_setup_netobjs;  /* fnc layer_setup(): tmp allocation cache for object listing */
+	void *layer_setup_res_cache; /* fnc layer_setup(): cached results for each condition evaluated - requests tend to repeat */
 	time_t last_prog_cb;
 
 	unsigned obj2netterm_inited:1;