-# upon reception of their acknowledgement we can sign the key
-# (which hopefully will remove the need for typing 'y' hehe)
+#
+####################
+# (*) upon reception of their acknowledgement, which establishes trust
+# sign and trust the key:
+# [boot-planet-lab-eu] ~/.gnupg # gpg --edit-key CERTH
+# gpg (GnuPG) 1.4.7; Copyright (C) 2006 Free Software Foundation, Inc.
+#
+# <snip>
+#
+# Command> sign
+#
+# <snip>
+#
+# Really sign? (y/N) y
+#
+# Command> trust
+#
+# <snip>
+#
+# 1 = I don't know or won't say
+# 2 = I do NOT trust
+# 3 = I trust marginally
+# 4 = I trust fully
+# 5 = I trust ultimately
+# m = back to the main menu
+#
+# Your decision? 5
+# Do you really want to set this key to ultimate trust? (y/N) y
+#
+# <snip>
+#
+# Command> q
+# Save changes? (y/N) y
+# [boot-planet-lab-eu] ~/.gnupg #
+