<%# %>

If it's not documented, I'd happily accept a patch.

It's provided in http://edge.javascriptmvc.com/docs#!jQuery.EJS, i've overlooked it.

Now I've seen this post I will change them all to <%# comment %>.

The docs (both jmvc and donejs) give an example using <%# 'comment' %> but that is wrong. It's probably easier for you to commit the fix instead of us both going through the pull request procedure.

I don't recall any of the proper examples using the comment syntax so I propose a slightly more extensive example such as:

<%# Here is a basic EJS todo list %>
<ul>
<% for(var i = 0; i < tasks.length; i++){ %>
    <li class="task <%= tasks[i].identity %>"><%= tasks[i].name %></li>
<% } %>
</ul>

Like: 

1. <% /* <td><%= model.attr('user.fullname') %></td> */ %>

I know that it's not really good practice to comment out code and all...but it seems using the embedded JS to make comments in EJS is really kind of kludgy. Also, the comment default in Sublime Text 2 is <!-- -->, which EJS does not respect at all. 

There will be questions if some IDE vendor (for example JetBrains) decide to implement EJS syntax support.