1<?xml version="1.0" encoding="UTF-8"?>
 2<!-- CHART algorithm Work Order file -->
 3<element name="work-order" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://relaxng.org/ns/structure/1.0" datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">
 4  <interleave>
 5    <optional>
 6      <attribute name="xsi:noNamespaceSchemaLocation">
 7        <value>http://chart/schemas/workorder</value>
 8      </attribute>
 9    </optional>
10    <element name="category">
11      <text/>
12    </element>
13    <element name="activity">
14      <text/>
15    </element>
16    <element name="id">
17      <data type="integer"/>
18    </element>
19    <optional>
20      <element name="sensing-start">
21        <data type="dateTime"/>
22      </element>
23    </optional>
24    <optional>
25      <element name="sensing-stop">
26        <data type="dateTime"/>
27      </element>
28    </optional>
29  </interleave>
30</element>