What does "display like missing tags" mean in this context?
I think he means "show where there are elements with missing end-tags",
ie indicate instances of non-well-formedness.
It's sometimes amusing to confront people with fully valid HTML
<!doctype html public "-//IETF//DTD HTML//EN">
<title>My first web page</title>
<h1>Welcome to my site</h1>
Most XML parsers will not tolerate ill-formed XML, including those with
"tags" that are not properly balanced. The main exception I know is the
Tidy tool -- available from the W3C's website, among other places --
which can be told to make a "best guess" at repairing broken documents,
much as browsers tend to for broken HTML.
I came across a badly broken HTML instance the other day which broke
even Tidy. It was a page containing text copied and pasted from some
other source, probably an old version of word, and the chunk started
something like:
<div>
</p><p font: Verdana>text...
....
</div>
The div was generated, but the user's pasted text started with a p
end-tag, and Tidy gagged mightily on it, causing Cocoon to emit an empty
page. Quite apart from the invalid and unquoted "attributes", I've never
seen a chunk pasted from a GUI *start* with an end-tag.
///Peter
