You are reading the documentation for an older Pickit release (2.0). Documentation for the latest release (3.3) can be found here.
Files located on the Pickit processor are accessible through the Files page. This page allows you to browse the folder and file contents, view various robot program scripts as well as download the saved scenes.
robots: Contains the robot files for each supported robot brand.
ros: Contains the files that are needed for using the Pickit ROS interface.
user_changelog.md: The Pickit version changelog