In each of the places provided, enter the complete command line required to start the necessary application and act on the parameters passed to it. Environment variables are supported by wrapping them in percent signs. Here are some examples:
Web Browser: C:\mosaic\mosaic %u
Start Mosaic in the mosaic directory and load the URL represented by %u.
FTP Browser: %INTERNET%\ws_ftp %h %f
Start ws_ftp located in the directory pointed to by the environment variable INTERNET and transfer the file %f anonymously from host %h.
Each application varies, consult the documentation for your application.
See also: Using Clickable URL's