The LDraw.xml file is the file which governs the transformation of models between LDraw and LEGO Digital Designer. This file is a user editable XML file.
As both the LDD part selection and LDraw part selection are growing and the ldraw.xml file shipped with LEGO Digital Designer 2 is merely a template. The LDraw community attempts to keep track of up-to-date versions of this conversion file. If you modify this file, please add your new version to the top of the list in the same format. If you upgrade your file, please move it to the top of the list with a new date.