diff --git a/sh/tmux.sh b/sh/tmux.sh
index 8f3b98c..30370ea 100644
--- a/sh/tmux.sh
+++ b/sh/tmux.sh
@@ -350,15 +350,21 @@ bind-key v split-window -c '#{pane_current_path}' -v
 bind-key k kill-server
 
 # reload configuration
-bind-key r source-file ${file} \\; display-message 'source-file ${file}'
+bind-key r source-file ${file} \
+\\; display-message 'source-file ${file}'
 
 # toggle mouse
-bind-key t set-option -g mouse \\; display-message 'mouse = #{mouse}'
+bind-key M set-option -g mouse \
+\\; display-message 'mouse = #{mouse}'
 
 # swap window
 bind-key M-Left swap-window -t -1
 bind-key M-Right swap-window -t +1
 
+# synchronize panes
+bind-key S set-window-option synchronize-panes \
+\\; display-message 'sync = #{synchronize-panes}'
+
 #                                           ╭─────────────╮
 #                                           │ default     │
 #                     ╭───────────┬─────────┼─────┬───────┤
@@ -379,7 +385,7 @@ bind-key M-Right swap-window -t +1
 # │ select-pane -L    │ C-S-Left  │         │     │       │
 # │ select-pane -R    │ C-S-Right │         │     │       │
 # │ select-pane -U    │ C-S-Up    │         │     │       │
-# │ set -g mouse      │           │ t       │     │       │
+# │ set -g mouse      │           │ M       │     │       │
 # │ set -g status off │ C-F6      │         │     │       │
 # │ set -g status on  │ C-F1      │         │     │       │
 # │ set -g status 2   │ C-F2      │         │     │       │
@@ -393,6 +399,7 @@ bind-key M-Right swap-window -t +1
 # │ swap-window -t +1 │           │ M-Right │     │       │
 # │ switch-client -n  │ M-Down    │         │     │       │
 # │ switch-client -p  │ M-Up      │         │     │       │
+# │ synchronize-panes │           │ S       │     │       │
 # ╰───────────────────┴───────────┴─────────┴─────┴───────╯
 "
 }