[ticket/10933] Useful documentation for template locate function

PHPBB3-10933

phpBB/includes/template/template.php

@@ -458,8 +458,40 @@ class phpbb_template
 	}
 
 	/**
-	* Locates source template path, accounting for styles tree and verifying that
-	* the path exists.
+	* Obtains filesystem path for a template file.
+	*
+	* The simplest use is specifying a single template file as a string
+	* in the first argument. This template file should be a basename
+	* of a template file in the selected style, or its parent styles
+	* if template inheritance is being utilized.
+	*
+	* Note: "selected style" is whatever style the style resource locator
+	* is configured for.
+	*
+	* The return value then will be a path, relative to the current
+	* directory or absolute, to the template file in the selected style
+	* or its closest parent.
+	*
+	* If the selected style does not have the template file being searched,
+	* (and if inheritance is involved, none of the parents have it either),
+	* false will be returned.
+	*
+	* Specifying true for $return_default will cause the function to
+	* return the first path which was checked for existence in the event
+	* that the template file was not found, instead of false.
+	* This is the path in the selected style itself, not any of its
+	* parents.
+	*
+	* $files can be given an array of templates instead of a single
+	* template. When given an array, the function will try to resolve
+	* each template in the array to a path, and will return the first
+	* path that exists, or false if none exist.
+	*
+	* If $return_full_path is false, then instead of returning a usable
+	* path (when the template is found) only the template's basename
+	* will be returned. This can be used to check which of the templates
+	* specified in $files exists, provided different file names are
+	* used for different templates.
 	*
 	* @param string or array $files List of templates to locate. If there is only
 	*				one template, $files can be a string to make code easier to read.