This is the location of XML Schema definitions for JMRI Do not put an index.shtml file in this directory, because it must be directly browsable on the web at http://jmri.org/xml/schema Note: Somewhere between JMRI 2.9.6 and JMRI 3.8.2, backwards-incompatible changes were made in the layout schema. This means that files written early (pre some version X) cannot be validated with later releases (post some version X). To try to remedy this, we updated the schema version number to 3-8-2 in JMRI version 3-8-2. That fixes the problem going forward, but not for versions between X and 3.8.2. That will require additional work later. For a file with an example of the problem, see https://sourceforge.net/p/jmri/code/26760/log/?path=/trunk/jmri/java/test/jmri/jmrit/display/layoutEditor/LEConnectTest.xml