Board Thread:General Discussion/@comment-9605025-20180718213256/@comment-9605025-20180719193829

Okay. So this is a very recent change.

I don't quite understand the logic behind keeping something like arXiv but not doi. It seems to me that the two would be used in similar circumstances. I can certainly understand the need to cut down the number of prefixes; especially since only a few are ever used. But there doesn't appear to be a clear criteria for which ones are kept.