diff --git a/docs/07-bootstrapping-etcd.md b/docs/07-bootstrapping-etcd.md
index 1aa0289..b666729 100644
--- a/docs/07-bootstrapping-etcd.md
+++ b/docs/07-bootstrapping-etcd.md
@@ -10,13 +10,15 @@ The commands in this lab must be run on each controller instance: `controller-0`
 gcloud compute ssh controller-0
 ```
 
-### Tmux
+### Running commands in parallel with tmux
 
 [tmux](https://github.com/tmux/tmux/wiki) can be used to run commands on multiple compute instances at the same time. Consider splitting a tmux window into multiple panes and enabling `synchronize-panes` to speed up the provisioning process.
 
+> The use of tmux is optional and not required to complete this tutorial.
+
 ![tmux screenshot](images/tmux-screenshot.png)
 
-> Enable `synchronize-panes`: ctrl+b then `shift :`. Then type `set synchronize-panes on` at the prompt. To disable synchronization: `set synchronize-panes off`.
+> Enable `synchronize-panes`: `ctrl+b` then `shift :`. Then type `set synchronize-panes on` at the prompt. To disable synchronization: `set synchronize-panes off`.
 
 ## Bootstrapping an etcd Cluster Member