optional, single

ref=identifier of the shop to be cross-referenced

Via <shopref ref="id_of_shop_to_be_cross-referenced"/> access to data stored under this identifier is possible. By means of this it is possible to simply make a cross-reference to a shop's data which were specified before in the file.

<purchase>

—

<purchase>, <shop>

(see also <purchase>)

<uddf version="2.2.0">
    <generator>
        <!-- information about the generating software -->
    </generator>
    <diver>
        <owner id="o1">
            <!-- description of the owner of the UDDF file -->
            <equipment>
                <fins id="my_fins">
                    <purchase>
                        <shop id="shop_Watersports-Limited">
                            <name>Watersports Limited</name>
                            <address>
                                <!-- address of shop -->
                            </address>
                            <contact>
                                <!-- contact data of shop -->
                            </contact>
                        </shop>
                    </purchase>
                    <!-- further description of the fins -->
                </fins>
                <mask id="my_mask">
                    <purchase>
                        <!-- mask, and fins were bought in the same shop -->
                        <shopref ref="shop_Watersports-Limited"/>
                    </purchase>
                    <!-- further description of the mask -->
                </mask>
                <!-- description of more equipment used by the owner of the UDDF file -->
            </equipment>
        </owner>
        <buddy id="b1">
            <!-- description of a dive buddy -->
        </buddy>
        <!-- here can stand more <buddy> elements, if necessary -->
    </diver>
    <!-- here can stand more sections -->
</uddf>