Index: boxsym-rnd/7400.bs
===================================================================
--- boxsym-rnd/7400.bs	(revision 3942)
+++ boxsym-rnd/7400.bs	(revision 3943)
@@ -24,7 +24,7 @@
 	shape box right=halfcirc
 	label "4*NAND"
 	attr device 7400
-	attr_both slot 1
+	attr_both -slot 1
 #	attr_invis foo bar
 
 	begin pin A