Thanks Matthew, I don’t think I explained it well.
I’m on Page A, but I want to send, in an e-mail, a link to Page B that directs them to a particular order.
How do I get the URL of Page B such that if I change the name of Page B it follows, and also sends the appropriate live or test version or the link to Page B in the e-mail?
If your Page B has a content type, then you can use in a dynamic expression that references the data type that is the content type of Page B the ‘link’ and if you change the name of page B it doesn’t matter and if it is live versus dev it doesn’t matter.