I can't explain this, but I just tested a few cases and found that it works
if you use this format:
<!-- test test test test --->
(3 - at the end)
Wei-hsing
 -------------- Original message ----------------------
From: Jean-Lou Dupont <xwiki(a)jldupont.com>
  Good point.  But what confused me a bit is the fact I
had put <!-- comment
 here --> inside a form definition in the same document without any problems.
 E.g. the example below works fine as far as I can tell.
 <div class="left" style="width: 150px">
 #includeTopic("XWiki.XWikiCommonJavascript")
 <form action="" id="newdoc">
 <input type="hidden" name="parent" value="Artifact.Home"
/>
 <input type="hidden" name="template"
value="Artifact.Template" />
 <input type="hidden" name="sheet" value="1" />
 Space to create: <input type="text" name="webname"
value=""/>
 <input type="hidden" name="name" value=""/>
 <!-- TODO: update page name. The document name must be automatically filled
 in e.g. space.home -->
 <input type="text" name="title" value="page name"
size="18"/>
 <input type="button" value="Create this Space" onclick='if
 (updateName(this.form.title,this.form.name)){ action="../../inline/" +
 this.form.webname.value + "/" + this.form.name.value; this.form.submit();
}'
 />
 </form>
 </div>
 Jld.
 -----Original Message-----
 From: Arnaud Bourree [HYPERLINK
 "mailto:arnaud.bourree@gemalto.com"mailto:arnaud.bourree@gemalto.com]
 Sent: September 1, 2006 04:34
 To: xwiki-users(a)objectweb.org
 Subject: Re: [xwiki-users] Issue with HTML comment.
 Don't forget to escape Wiki or velocity special character:
 example: if you want to explain in a page how to use velocity macro
 (whatever you put it in a {code} section, you should write something like:
 \#myMacro(\$myVariable, "some text")
 For HTML comment you should write:
 <!\-\- my html comment \-\->
 Robinson Nathaniel wrote on 01/09/2006 06:57:
  Does the comment have to be sent to the browser?
 Velocity has comments (## comments a single line and #* *# comments a
 block), but the text will only be visible when viewing or editing the
 code and won't be sent to the browser.
 -----Original Message-----
 From: wangwh(a)att.net [HYPERLINK 
"mailto:wangwh@att.net"mailto:wangwh@att.net]
  Sent: Friday, September 01, 2006 5:23 AM
 To: xwiki-users(a)objectweb.org
 Subject: Re: [xwiki-users] Issue with HTML comment.
 '--' is used in Wiki syntax for other things, I was wondering how to
 add HTML comments also.
  -------------- Original message ----------------------
 From: Jean-Lou Dupont <xwiki(a)jldupont.com>
  FYI:
 If one is to insert an HTML comment at the end of a document and save
 it, the rendered document is completely garbled.
 e.g.
 <input type="text" name="title" value="page name"
size="18"/> <input
 type="button" value="Create this Space" onclick='if
 (updateName(this.form.title,this.form.name)){ action="../../inline/"
 + this.form.webname.value + "/" + this.form.name.value;
 this.form.submit();
     
 }'
 31/08/2006
     
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