Syntax:

a_uri

[Default: /WEB-INF/zk-label.properties]

It specifies the location of the properties file for the internationalization labels. If you have multiple properties files, you could specify them one by one. For example,

<system-config>
    <label-location>/WEB-INF/labels/order.properties</label-location>
    <label-location>/WEB-INF/labels/invoice.properties</label-location>
</system-config>

Notice that, once specified, WEB-INF/zk-labels.properties is ignored. In other words, ZK loads only the files specified in the label-location element. If you still want to load it, you have to specify it in WEB-INF/zk.xml too.

<system-config>
    <label-location>/WEB-INF/zk-label.properties</label-location><!-- if you still need zk-label.properties -->
    <label-location>/WEB-INF/labels/order.properties</label-location>
    <label-location>/WEB-INF/labels/invoice.properties</label-location>
</system-config>