Web Oom

It is about template inheritance.
See example at
http://weboom.wordpress.com/2009/07/01/what-is-block/

It is about template inheritance.
For example, assume that base.html has
{% block yourblock %}
Here, your block content in base.html
{% endblock %}
———-
In base_child.html can have their own version of yourblock content
{% extends “base.html” %}
{% block yourblock %}
Here, the base.html content can be overwritted with this.
{% endblock %}