diff --git a/README.md b/README.md
index b98b0101..5ba9ae58 100644
--- a/README.md
+++ b/README.md
@@ -64,8 +64,11 @@ then `ESC g`.  If you use the `pdp10-kl` emulator there is no prompt
 and you need to type `Esc L ITS`, press Enter, and then `ESC g`.
 Eventually, you will see `SYSTEM JOB USING THIS CONSOLE`.  You are now
 ready to log in, so type Control-Z.  See [doc/DDT.md](doc/DDT.md) for
-a list of useful commands.  When done, shut down orderly by typing
-`:lock` and then `5down`.
+a list of useful commands.
+
+To shut down ITS, type `:lock` and then `5down`.  Log yourself out to
+avoid the 5 minute grace period: type `:logout`.  When ITS writes
+`SHUTDOWN COMPLETE`, it's safe to stop the emulator.
 
 ITS can optionally use some additional peripheral devices.  To attach
 a simulated GT40 graphics terminal, type `./start gt40` when booting