A few points:

• If you use use, the file has to have a .pm extension, even if it does not have any package definitions. On the other hand, require can take any arbitrary filename as an argument, so you could do:

  require 'file.pl';
  [download]

  if you want, whereas with use the file needs to be called "file.pm".
• In both cases (use and require), you do not need the filename::function syntax you mentioned if the file does not contain any package declarations and just has the function definitions. The functions are imported into your current namespace.
• In both cases the included file has to return a true value. This is usually accomplished by putting a line containing "1;" at the end of the file.

--ZZamboni

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