diff --git a/expect.sh b/expect.sh
index 19c760e..65517ff 100644
--- a/expect.sh
+++ b/expect.sh
@@ -1,16 +1,27 @@
 #!/usr/bin/expect
+
+## For every 1 character sent, wait 0.001 milliseconds
 set send_slow {1 0.001}
+
+## Start the Ox64 BL808 Emulator
 spawn ./temu nuttx.cfg
 
+## Wait for the prompt and enter `uname -a`
 expect "nsh> "
 send -s "uname -a\r"
 
+## Wait for the prompt and enter `ostest`
 expect "nsh> "
 send -s "ostest\r"
 
+## Wait at most 120 seconds
 set timeout 120
+
+## Check the response...
 expect {
+  ## If we see this message, exit normally
   "ostest_main: Exiting with status -1" { exit 0 }
+
+  ## If timeout, exit with an error
   timeout { exit 1 }
 }
-exit 2