There are cases where an ActiveChoice parameter is used to list long directory contents. In one of my use cases I display as options the file names of images generated by an automated microscope which collects anywhere from 1K -8K images per folder.
Although this works, it makes the UI unresponsive while the script parses the folder and loads the image filenames. In this use case it would be useful to provide a parameter option that allows for paging throught this long list of options. I'm envisioning an option that allows the AC control to page through options similar to this: