In order to view and manipulate the files, the user must have a copy of GSP (or the demo version) available on his system. The user then configures his browser to recognize both types of file and deal with each appropriately using GSP as a helper application (see the instructions link on the contents page). Specifically, the browser is set to open downloaded sketches in GSP, and to save downloaded scripts in GSP's Script Tools folder. The sketches are invoked by a thumbnail GIF linked to the GSP file, while the scripts are downloaded either en masse as part of the initial configuration or individually via text links.