PEAK Win32 DDE URL

Example:

        "win32.dde:service::topic;file=c:\foo;retries=5;sleep=5"

Syntax is service::topic followed by semicolon-separated parameters, which may be file to designate a file to be launched if the initial connection attempt is unsuccessful, retries to indicate how many retries should occur if the initial attempt is unsuccessful, and sleep to set the number of seconds to wait between retry attempts.

These parameters are all available as attributes of the same names, including service and topic.