diff --git a/tcltk/netgen.tcl.in b/tcltk/netgen.tcl.in
index 431bcf1..8815656 100644
--- a/tcltk/netgen.tcl.in
+++ b/tcltk/netgen.tcl.in
@@ -382,6 +382,9 @@ proc netgen::lvs { name1 name2 {setupfile setup.tcl} {logfile comp.out} args} {
       } elseif {$arg == "-blackbox"} {
 	 puts stdout "Treating empty subcircuits as black-box cells"
 	 netgen::model blackbox on
+      } elseif {$arg == "-full"} {
+	 puts stdout "Using full symmetry breaking method"
+	 netgen::symmetry full
       }
    }