Loewy_Betterhints

Adds better template hints to Magento pages in the form of HTML comments.

Before Loewy_Betterhints:

<div class="breadcrumbs">
    <ul>
        <li class="home">
            <a href="http://example.com/" title="Go to Home Page">Home</a>
            <span>/ </span>
        </li>
        <li class="cms_page">
            <strong>About Us</strong>
        </li>
    </ul>
</div>

After Loewy_Betterhints:

<!-- START BLOCK 16
Class: Mage_Page_Block_Html_Breadcrumbs
Name: breadcrumbs
Template: frontend\base\default\template\page/html/breadcrumbs.phtml
toHtml() Path:
   + Mage_Page_Block_Html (Name: root Template: frontend\rwd\default\template\page/2columns-left.phtml)
   +--- Mage_Page_Block_Html_Breadcrumbs (Name: breadcrumbs Template: frontend\base\default\template\page/html/breadcrumbs.phtml) -->
<div class="breadcrumbs">
    <ul>
        <li class="home">
            <a href="http://example.com/" title="Go to Home Page">Home</a>
            <span>/ </span>
        </li>
        <li class="cms_page">
            <strong>About Us</strong>
        </li>
    </ul>
</div>
<!-- END BLOCK 16 -->

Note that the only way to turn the hints on or off at the moment is to enable or disable the module through its config file.