This script remembers the last project file you dropped to it. Everytime you drop other files to this script these files will be stored to the latest remembered project. You may make copies of this script different projects, drop the project file to them and use the script as a drop-in-tool for this project in future. You may also adapt
the parameters at the open and store commands (password, options, ...) to meet your needs.
Double clicking the script will simply open the project.