Nats list adtool groups
list_adtool_groups is a new template function in NATS4 that will output a list of adtool groups with a PHP script. This allows you to create a list of adtool groups for use in your templating. By doing so, you can avoid long load times that can potentially occur when importing a large amount of adtools.
Adtool groups that are included by default in NATS include Banners, Hosted Adtools, Downloadable Adtools, and Feeds.
This function takes no parameters.