install: mention the new logging directives and what happens on fail

howto/new-machine-hetzner-robot.md

@@ -76,6 +76,15 @@ The last two are passed to `grml-debootstrap` and should rarely be
 changed (although they could be coverted in to Fabric tasks
 themselves).
 
+Note that the script will show you lines like:
+
+    STEP 1: SSH into server with fingerprint ...
+
+Those correspond to the manual install procedure, below. If the
+procedure stops before the last step (currently STEP 12), there was a
+problem in the procedure, but the remaining steps can still be
+performed by hand.
+
 If a problem occurs in the install, you can login to the rescue shell
 with: