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Letters that come before www.ariespuzzles.com (yep, I just did it)
Answer for the clue "Letters that come before www.ariespuzzles.com (yep, I just did it) ", 4 letters:
http
Alternative clues for the word http
Usage examples of http.
No plug-in is required when a proxy server HTTP is used - but then the DOI becomes just another URL, embedded in the page when it is created and not resolved when the user clicks on it.