Jekyll Include with var example

jek_inc_example.html

## using the includes and setting the var

{% assign themetitle = 'text text' %}
{% include modules/theme_title.html %}

{% assign themetitle = 'new title text' %}
{% include modules/theme_title.html %}

## contents of theme_title.html 

<h1 class="theme-title">{{ themetitle }}</h1>

## output of the includes

<h1 class="theme-title">text text</h1>
<h1 class="theme-title">new title text</h1>