Sorry for that misdirection, it appears that since they changed the forum platform software ‘Show user signatures’ is off by default and each user has to enable it themselves in their own profiles.
(It should really be ON by default for all users and they can choose to turn it off, but it will need a forum admin to change that behaviour).
Until they do change it we now know not to refer to something that users can’t see by default.
If it had been turned on for all users then you would have seen this:
The link that i was referring to is this one:
Can’t post an Image or a Weblink? - click this