Index: trunk/util/boxsym-rnd/7400.bs
===================================================================
--- trunk/util/boxsym-rnd/7400.bs	(revision 2832)
+++ trunk/util/boxsym-rnd/7400.bs	(revision 2833)
@@ -25,6 +25,7 @@
 	label "4*AND"
 	attr device 7400
 	attr_both slot 1
+#	attr_invis foo bar
 
 	begin pin A
 		num 1:4:9:12
Index: trunk/util/boxsym-rnd/generator.awk
===================================================================
--- trunk/util/boxsym-rnd/generator.awk	(revision 2832)
+++ trunk/util/boxsym-rnd/generator.awk	(revision 2833)
@@ -154,6 +154,7 @@
 
 function draw_all_labels(sn    ,key,pat,x,y,ak,prefix,vis)
 {
+	grp_attr_append(SYM, "symbol_generator", "boxsym-rnd")
 	pat = "^" sn SUBSEP "attr" SUBSEP
 	y = -2*pin_grid
 	x = -2*pin_grid
@@ -167,9 +168,10 @@
 			else
 				prefix = ""
 			grp_attr_append(SYM, ak, SLOT[key])
-			if (vis != "none")
+			if (vis != "none") {
 				sym_text_attr(SYM, x, y, ak, 0, "sym-secondary", prefix)
-			y -= pin_grid
+				y -= pin_grid
+			}
 		}
 	}
 }
Index: trunk/util/boxsym-rnd/parser.awk
===================================================================
--- trunk/util/boxsym-rnd/parser.awk	(revision 2832)
+++ trunk/util/boxsym-rnd/parser.awk	(revision 2833)
@@ -93,6 +93,10 @@
 			SLOT[slot, "attr",  $2] = del2($0)
 			SLOT[slot, "attr_vis",  $2] = "both"
 		}
+		else if ($1 == "attr_invis") {
+			SLOT[slot, "attr",  $2] = del2($0)
+			SLOT[slot, "attr_vis",  $2] = "none"
+		}
 		else if ($1 == "begin")
 			parse_any()
 		else {
@@ -115,3 +119,4 @@
 ($1 == "label") { SLOT["", "label", ++SLOT["", "labels"]] = $2 }
 ($1 == "attr") { SLOT["", "attr",  $2] = del2($0) }
 ($1 == "attr_both") { SLOT["", "attr",  $2] = del2($0); SLOT["", "attr_vis",  $2] = "both"; }
+($1 == "attr_invis") { SLOT["", "attr",  $2] = del2($0); SLOT["", "attr_vis",  $2] = "none"; }