<xsd:element name="PredecessorLink" minOccurs="0" maxOccurs="unbounded">
    <xsd:annotation>
        <xsd:documentation>Defines the predecessor task of the task that contains it.</xsd:documentation>
    </xsd:annotation>
    <xsd:complexType>
        <xsd:sequence>
            <xsd:element name="PredecessorUID" type="xsd:integer" minOccurs="0">
                <xsd:annotation>
                    <xsd:documentation>The unique identifier of the predecessor task.</xsd:documentation>
                </xsd:annotation>
            </xsd:element>
            <xsd:element name="Type" minOccurs="0">
                <xsd:annotation>
                    <xsd:documentation>The link type.  Values are 0=FF, 1=FS, 2=SF and 3=SS</xsd:documentation>
                </xsd:annotation>
                <xsd:simpleType>
                    <xsd:restriction base="xsd:integer">
                        <xsd:enumeration value="0" />
                        <xsd:enumeration value="1" />
                        <xsd:enumeration value="2" />
                        <xsd:enumeration value="3" />
                    </xsd:restriction>
                </xsd:simpleType>
            </xsd:element>
            <xsd:element name="CrossProject" type="xsd:boolean" minOccurs="0">
                <xsd:annotation>
                    <xsd:documentation>Whether the predecessor is part of another project.</xsd:documentation>
                </xsd:annotation>
            </xsd:element>
            <xsd:element name="CrossProjectName" type="xsd:string" minOccurs="0">
                <xsd:annotation>
                    <xsd:documentation>The external predecessor project.</xsd:documentation>
                </xsd:annotation>
            </xsd:element>
            <xsd:element name="LinkLag" type="xsd:integer" minOccurs="0">
                <xsd:annotation>
                    <xsd:documentation>The amount of lag in tenths of a minute.</xsd:documentation>
                </xsd:annotation>
            </xsd:element>
            <xsd:element name="LagFormat" minOccurs="0">
                <xsd:annotation>
                    <xsd:documentation>The format for expressing the lag format.  Values are: 3=m, 4=em, 5=h, 6=eh, 7=d, 8=ed, 9=w, 10=ew, 11=mo, 12=emo, 19=%, 20=e%, 35=m?, 36=em?, 37=h?, 38=eh?, 39=d?, 40=ed?, 41=w?, 42=ew?, 43=mo?, 44=emo?, 51=%? and 52=e%?</xsd:documentation>
                </xsd:annotation>
                <xsd:simpleType>
                    <xsd:restriction base="xsd:integer">
                        <xsd:enumeration value="3" />
                        <xsd:enumeration value="4" />
                        <xsd:enumeration value="5" />
                        <xsd:enumeration value="6" />
                        <xsd:enumeration value="7" />
                        <xsd:enumeration value="8" />
                        <xsd:enumeration value="9" />
                        <xsd:enumeration value="10" />
                        <xsd:enumeration value="11" />
                        <xsd:enumeration value="12" />
                        <xsd:enumeration value="19" />
                        <xsd:enumeration value="20" />
                        <xsd:enumeration value="35" />
                        <xsd:enumeration value="36" />
                        <xsd:enumeration value="37" />
                        <xsd:enumeration value="38" />
                        <xsd:enumeration value="39" />
                        <xsd:enumeration value="40" />
                        <xsd:enumeration value="41" />
                        <xsd:enumeration value="42" />
                        <xsd:enumeration value="43" />
                        <xsd:enumeration value="44" />
                        <xsd:enumeration value="51" />
                        <xsd:enumeration value="52" />
                        <xsd:enumeration value="53" />
                    </xsd:restriction>
                </xsd:simpleType>
            </xsd:element>
        </xsd:sequence>
    </xsd:complexType>
</xsd:element>