Inu it translates as "TWIG code for a random post on xtblog"
if you wish to show ONE random post instead of the list
in the blog twig block {% block entries_list %}
remove the line {% for entry in data.entries %}
and replace it with
and remove the corresponding {% endif %}
you will need to set your blog function to entries_per_page="0" to use the whole post list
As this is set in the twig ALL blog functions on the site will be affected the same
This is where I have tested it http://blogtwig.xtgem.com/blag