Publishing multiple items
You can use just one 'Add to TomTom' button to install multiple content items.
In order to do this, your XML file has to contain the <items> element rather than the <item> element which is used to install single items. <items> has a child element called <contentlist>, which contains the individual content items.
You can combine various types of content in this XML file, for example, you can install POI sets, itineraries and voices all in one XML file.
For each content item you need a zip file which contains the content files.
Next step: See a code example for an XML file that installs multiple items.