ode>msg.topic</code> property.</p>
    <p>The Cancel button can be hidden by setting it's value to be blank "".</p>
    <p>When form elements of type 'dropdown' have been used, the corresponding dropdown options can be specified in the second tabsheet.</p>
    <h3>Dynamic Properties (Inputs)</h3>
    <p>Any of the following can be appended to a <code>msg.ui_update</code> in order to override or set properties on this node at runtime.</p>
    <dl class="message-properties">
        <dt class="optional">label