Board Thread:Tales from the Tardis/@comment-24894325-20171228112635/@comment-24894325-20180406210402

Speedy rename it is not. For that one need a policy, a closed thread, etc. But as a rename it seems to be quite reasonable.

Having said that, this is a slightly different situation dealing with books' subtitles, a well defined concept in typography. I'm not ready to tell off the top of my head how subtitles are normally dealt with. Perhaps, this is best discussed on the talk page of the book (I can check the exact styling in a local bookshop).