Annotate is an interesting command. If you did the following:
user@host# annotate routing-options "This is my annotate comment"
and then you did:
user@host# show routing-options
You will not see your comment.
If you just do a show command you will see the comment as follows:
user@host# show
. . . .
. . . .
/*This is my annotate comment */
routing-options { . . . .
So your annotations are not displayed within the context of a show statement for that stanza as they precede the stanza display. I hope that makes sense.