When a Popup Menu is selected in the parameters list, the following user interface is displayed:

Popup menu parameters can be used to create a UI for index-type input ports published by the Quartz composition. Popup menus can only be created for index ports whose upper limit is 99, which corresponds to a popup menu with 100 items.

The Default menu item option lets you pick the initial menu item that will be selected when the plug-in is first applied.

The Menu items list lets you assign names to each one of the options available via this parameter. This list always displays a number of items that is equal to the range allowed by the Quartz composition index-type input this parameter is mapped to.