Thread:Artful Dodger/@comment-26039971-20180201010152/@comment-100066-20180201025656

A Temporary Reality Number is a number that we create on this site to keep track of things which do not have an official Marvel reality designation yet. For instance, the Legion television show that came out recently did not have an official designation, so we give it number Earth-TRN620.

We do that so users will be able to create and edit articles while we are waiting for the real number to be released. When it is, it is easy to find all of the things related to a TRN and change them.

You can see the category of TRNs here and the list of TRNs here.