[galaxy-dev] select with a value preselected

Hello,

In my tool UI, I have a select tool as follows:

<param name="site" type="select" multiple="true" label="Execution Location" help="Multi-select list - hold the appropriate key while clicking to select multiple items"> <option value="localhost">Localhost</option> <option value="midway">Midway</option> <option value="uc3">UC3</option> <option value="stampede">Stampede</option> <option value="tukey">Tukey</option> </param>

How do I tell it to preselect value "localhost" by default?

Currently, user has to explicitly select the a value but if she forgets to do so the tool breaks because nothing is selected by default.

Thanks,