--- /dev/null
+<?xml version="1.0" encoding="UTF-8" ?>
+<grammar xmlns="http://relaxng.org/ns/structure/1.0">
+ <start>
+ <element name="configuration">
+ <element name="nodes">
+ <oneOrMore>
+ <element name="node">
+ <attribute name="sn">
+ <text />
+ </attribute>
+ <optional>
+ <element name="customName">
+ <text />
+ </element>
+ </optional>
+ <element name="vars">
+ <oneOrMore>
+ <element name="var">
+ <attribute name="oid">
+ <text />
+ </attribute>
+ <optional>
+ <element name="customDescription">
+ <text />
+ </element>
+ </optional>
+ <optional>
+ <element name="color">
+ <text />
+ </element>
+ </optional>
+ <optional>
+ <element name="commonGraphDisplay">
+ <text />
+ </element>
+ </optional>
+ <optional>
+ <element name="value">
+ <text />
+ </element>
+ </optional>
+ </element>
+ </oneOrMore>
+ </element>
+ </element>
+ </oneOrMore>
+ </element>
+ </element>
+ </start>
+</grammar>