Allegedly, on or about 26 July 2013, Richard Vickery sent: > I suppose I am answering my own question when I suggest the > supposition that I can open files in a web-browser. A web browser has never been a suitable test for HTML (or other similar languages). It doesn't point out errors, it makes (often horrible) guesses about how to deal with them, and frequently disobeys rules about how things should be handled. I'm guessing that you want a "validator." You could see if one of the trusted ones supports HTML5 and runs on Fedora. e.g. Try w3c-markup-validator.noarch I haven't tried any HTML5 authoring, yet, I haven't had the need to go beyond HTML4, so I've not even experimented with it. -- [tim@localhost ~]$ uname -rsvp Linux 3.9.10-100.fc17.x86_64 #1 SMP Sun Jul 14 01:31:27 UTC 2013 x86_64 All mail to my mailbox is automatically deleted, there is no point trying to privately email me, I will only read messages posted to the public lists. George Orwell's '1984' was supposed to be a warning against tyranny, not a set of instructions for supposedly democratic governments. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org