limit custom html.tpl.php to exact page, not subpages, drupal 7 I have a custom tpl page intended for a specific page like so:

html--something--anotherthing.tpl.php

This allows some custom handling on the page /something/anotherthing as desired. Unfortunately it is also being applied to sub pages like /something/anotherthing/details where the custom handling is not desired. Is there a syntax for naming tpl files so that it only applies to the desired page?

edit: I've enabled theme_debug and it suggests exactly what I already have for the filename so not helpful.
If it's just one page you can just use something like node--nid.tpl.php
 or page--node--nid.tpl.php right? (Assume that /something/anotherthing and /something/anotherthing/details are two difference nodes)