diff --git a/src/mouse_bindings.tcl b/src/mouse_bindings.tcl
index 566fd879..2f45cd88 100644
--- a/src/mouse_bindings.tcl
+++ b/src/mouse_bindings.tcl
@@ -1,55 +1,116 @@
 ################################################################################
-# $Id: mouse_bindings.tcl,v 1.3 2023/06/26 21:00:11 paul Exp $
+# $Id: mouse_bindings.tcl,v 1.6 2023/06/29 23:44:15 paul Exp $
 #
-#                                          $env(HOME)/.xschem/mouse_bindings.tcl
+#                    $env(HOME)/.xschem/mouse_bindings.tcl
 #
 # The purpose of this code is to configure custom mouse button bindings for
 # mice that have more buttons than the conventional 3 buttons and scroll wheel.
-# This code also works to reconfigure bindings for conventional mice.
+# This code also works to reconfigure bindings for conventional mice. In my
+# case, my mouse has 2 extra buttons that X11 has identified as 8 & 9.
 #
 # INSTRUCTIONS:
-#       1. use linux command 'xev -event button' to find the X11 mouse button ID
-#               number for any mouse button.
-#       2. modify 'proc mouse_buttons' below to define an action for the button
-#               along with optional key modifier(s).
-#       3. add the following line to user xschemrc file:
-#                       lappend tcl_files $env(HOME)/.xschem/mouse_bindings.tcl
+#  1. use linux command 'xev -event button' to find the X11 mouse button ID
+#     number for any mouse button.
+#  2. modify 'proc mouse_buttons' below to define an action for the button
+#     along with optional key modifier(s).
+#  3. add the following line to user xschemrc file:
+#     lappend tcl_files $env(HOME)/.xschem/mouse_bindings.tcl
 #
 ################################################################################
 
 ################################################################################
 # PARAMETERS of proc mouse_buttons { b m }:
-# NOTE THAT BIT 4 OF $m IS ALWAYS SET SO $m >= 16
+# NOTE BITS 1,4,5 (Cap-Lock,Num-Lock,Undefined) Need to be cleared
 # NOTE THAT THE 'OR' OF ALL MODIFIER KEYS = 0x4f
-# $m: modifier key(s)
-#    No Modifier:  0
-#    Shift:        1
-#    Caps-Lock:    2
-#    Control:      4
-#    Alt:          8
-#    Num-Lock:    16
-#    Win key:     64
-# To encode multiple modifiers simply add the corresponding modifier numbers
+# $m: modifier:   bit# bitval
+#    No Modifier:  -     0
+#    Shift:        0     1
+#    Cap-Lock:     1     2
+#    Control:      2     4
+#    Alt:          3     8
+#    Num-Lock:     4    16
+#    Mod3:         5    32 (not mapped to any key on PC keyboards)
+#    Win key:      6    64
+# To encode multiple modifiers simply add the corresponding modifier bitvals
 # $b: mouse button: 1..9
 ################################################################################
 
 proc mouse_buttons { b m } {
-        # filter out Caps-Lock and Num-Lock status
-        set m [ expr { $m & ~(16+2) } ]
-        # puts "modifier state: $m"
-        switch $m {
-                0       { switch $b {
-                                8       { xschem zoom_full center       }
-                                9       { xschem unhilight_all          } } }
-                1       { switch $b {
-                                8       { xschem set_modify 1; xschem save      } } }
-        }
+   # filter out Cap-Lock, Num-Lock, and Undefined keys
+   set m [ expr { $m & ~(2+16+32) } ]
+   # puts "modifier state: $m"
+   switch $m {
+   # None
+      0  { switch $b {
+            8  { xschem zoom_full center           }
+            9  { xschem unhilight_all              } } }
+   # Shift
+      1  { switch $b {
+            8  { xschem set_modify 1; xschem save  }
+            9  {                                   } } }
+   # Cntl
+      4  { switch $b {
+            8  {                                   }
+            9  {                                   } } }
+   # Shift+Cntl
+      5  { switch $b {
+            8  {                                   }
+            9  {                                   } } }
+   # Alt
+      8  { switch $b {
+            8  {                                   }
+            9  {                                   } } }
+   # Shift+Alt
+      9  { switch $b {
+            8  {                                   }
+            9  {                                   } } }
+   # Cntl+Alt
+      12 { switch $b {
+            8  {                                   }
+            9  {                                   } } }
+   # Shift+Cntl+Alt
+      13 { switch $b {
+            8  {                                   }
+            9  {                                   } } }
+   # Winkey
+      64 { switch $b {
+            8  {                                   }
+            9  {                                   } } }
+   # Shift+Winkey
+      65 { switch $b {
+            8  {                                   }
+            9  {                                   } } }
+   # Cntl+Winkey
+      68 { switch $b {
+            8  {                                   }
+            9  {                                   } } }
+   # Shift+Cntl+Winkey
+      69 { switch $b {
+            8  {                                   }
+            9  {                                   } } }
+   # Alt+Winkey
+      72 { switch $b {
+            8  {                                   }
+            9  {                                   } } }
+   # Shift+Alt+Winkey
+      73 { switch $b {
+            8  {                                   }
+            9  {                                   } } }
+   # Cntl+Alt+Winkey
+      76 { switch $b {
+            8  {                                   }
+            9  {                                   } } }
+   # Shift+Cntl+Alt+Winkey
+      77 { switch $b {
+            8  {                                   }
+            9  {                                   } } }
+   }
 }
 
 # the global variable 'has_x' is provided by xschem. It is defined to '1' 
 # if graphics has been initialized.
 
 if { [ info exists has_x ] } {
-#       puts "Loading ~/.xschem/mouse_bindings.tcl"
-        bind .drw <Any-Button> {+mouse_buttons %b %s}
+#  puts "Loading ~/.xschem/mouse_bindings.tcl"
+   bind .drw <Any-Button> {+mouse_buttons %b %s}
 }
diff --git a/xschem_library/devices/noconn.sym b/xschem_library/devices/noconn.sym
index 14e30454..66505813 100644
--- a/xschem_library/devices/noconn.sym
+++ b/xschem_library/devices/noconn.sym
@@ -1,10 +1,11 @@
-v {xschem version=2.9.8 file_version=1.2}
+v {xschem version=3.4.1 file_version=1.2
+}
 G {}
 K {type=noconn
-format="* noconn "
-vhdl_ignore=true
-verilog_ignore=true
-spice_ignore=true
+format="* noconn @#0:net_name"
+vhdl_format="-- noconn @#0:net_name"
+verilog_format="// noconn @#0:net_name"
+tedax_format="# noconn @#0:net_name"
 template="name=l1"}
 V {}
 S {}