See http://www.liquidmarkup.org/
My name is {{ user.name }}
Liquid Markup has loops:
{% for user in users %}
My name is {{ user.name }}
{% endfor %}
Liquid Markup has if/then/else conditionals:
{% if user.name == 'Alice' %}
This is text is just for Alice.
{% else %}
This is text is for everyone else.
{% endif %}
Liquid Markup can use any HTML tags:
My web page is %gt;a href="{{ user.url }}"%lt;here
Liquid Markup has filters for common needs:
My lunch costs {{lunch.price | format_as_money }}