Arena
... that Arena was the first web browser to support background images, tables, text flow around images, and inline mathematical expressions?
... that <b id="mwDKg"><a href="./Arena_(web_browser)" id="mwDKk" rel="mw:WikiLink" title="Arena (web browser)">Arena</a></b> was the first <a href="./Web_browser" id="mwDKo" rel="mw:WikiLink" title="Web browser">web browser</a> to support background images, tables, text flow around images, and inline mathematical expressions?