device and not an instance. Thus, the overwhelming majority of extensions
should be supported with direct loader support.
+##### Filtering Out Unknown Instance Extension Names
+In some cases, an ICD may support instance extensions that the loader does not.
+For the above reasons, the loader will filter out the names of these unknown instance
+extensions when an application calls `vkEnumerateInstanceExtensionProperties`.
+Additionally, this behavior will cause the loader to throw an error during
+`vkCreateInstance` if you still attempt to use one of these extensions. The intent is
+to protect applications so that they don't inadvertantly use functionality
+which could lead to a crash.
+
+On the other-hand, if you know you can safely use the extension, you may disable
+the filtering by defining the environment variable `VK_LOADER_DISABLE_INST_EXT_FILTER`
+and setting the value to a non-zero number. This will effectively disable the
+loader's filtering out of instance extension names.
<br/>
<br/>