This attribute allows to replace the content of a note with the content of a variable.

Suppose to have a variable foo with a value My name is John and the following template:

<div id="pagination" t:content="foo">
    This <b>content</b> will be removed

The output will be:

<div id="pagination">My name is John</div>

This can be useful to put come “test” content in your templates that will have a nice aspect on WYSIWYG editors, but at runtime will be replaced by real data coming from variables.