Ikiwiki aims to produce
[valid XHTML 1.0](http://validator.w3.org/check?url=referer).
-(Experimental HTML5 support is also available.)
+(Experimental [[tips/HTML5]] support is also available.)
Ikiwiki generates html using [[templates]], and uses [[css]], so you
can change the look and layout of all pages in any way you would like.
* YADA format setup files per default?
* Enable tagbase by default (so that tag autocreation will work by default).
Note that this is already done for wikis created by `auto-blog.setup`.
-* html5 on by default (some day..)
+* [[tips/html5]] on by default (some day..)
In general, we try to use [[ikiwiki-transition]] or forced rebuilds on
upgrade to deal with changes that break compatability. Some things that
--- /dev/null
+First, if you just want to embed videos using the html5 `<video>` tag,
+you can do that without switching anything else to html5.
+However, if you want to fully enter the brave new world of html5, read on..
+
+Currently, ikiwiki does not use html5 by default. There is a `html5`
+setting that can be turned on, in your setup file. Rebuild with it set, and
+lots of fancy new semantic tags will be used all over the place.
+
+You may need to adapt your CSS for html5. While all the class and id names
+are the same, some of the `div` elements are changed to other things.
+Ikiwiki's default CSS will work in both modes.
+
+The html5 support is still experimental, and may break in some browsers.
+No care is taken to add backwards compatability hacks for browsers that
+are not html5 aware (like MSIE). If you want to include the javascript with
+those hacks, you can edit `page.tmpl` to do so.
+[Dive Into HTML5](http://diveintohtml5.org/) is a good reference for
+current compatability issues and workarounds with html5.
+
+---
+
+Known ikiwiki-specific issues:
+
+* [[plugins/htmltidy]] uses `tidy`, which is not html5 aware, so if you
+ have that enabled, it will mangle it back to html4.