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Re: Replace HTML4 doctype declaration

From: Jean-Christophe Helary
Subject: Re: Replace HTML4 doctype declaration
Date: Mon, 20 Dec 2021 15:20:00 +0900

> On Dec 20, 2021, at 10:43, Jacob Bachmeyer <jcb62281@gmail.com> wrote:
> Is there even a reason to move to HTML5 at all?  Texinfo produces documents, 
> not Web apps.  What does HTML5 bring to the proverbial table that HTML4 lacks?

I don't understand your focus on "web apps". "Web apps" predate HTML5. The 
additions to HTML4 that led to HTML5 are certainly not centred on creating "web 
apps" but more on removing ambiguity in the standard and adding semantic 


Differences from HTML 4.01 and XHTML 1.x[edit]
The following is a cursory list of differences and some specific examples.

        • New parsing rules: oriented towards flexible parsing and 
compatibility; not based on SGML
        • Ability to use inline SVG and MathML in text/html
        • New elements: article, aside, audio, bdi, canvas, command, data, 
datalist, details, embed, figcaption, figure, footer, header, keygen, mark, 
meter, nav, output, progress, rp, rt, ruby, section, source, summary, time, 
track, video, wbr
        • New types of form controls: dates and times, email, url, search, 
number, range, tel, color[119]
        • New attributes: charset (on meta), async (on script)
        • Global attributes (that can be applied for every element): id, 
tabindex, hidden, data-* (custom data attributes)
        • Deprecated elements will be dropped altogether: acronym, applet, 
basefont, big, center, dir, font, frame, frameset, isindex, noframes, strike, tt
W3C Working Group publishes "HTML5 differences from HTML 4",[120] which 
provides a complete outline of additions, removals and changes between HTML 5 
and HTML 4.

Also https://www.w3.org/TR/html5-diff/

Jean-Christophe Helary @brandelune

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