how can i make any use of the !url tag?

[nebulaszlonemethi]

Hello,
could i get some hint how an end-user can make use of the !url tag in a definition? I cannot see any manifestation of it on the ui. I would expect to see a visible link that is generated on the intellisense popup or something similar.
All the manual says:

!url, which should hold a URL that has the full documentation of the type or function being defined.