Suppose you want to know why eh? You can package them up as 'include' libraries that you can then CALL from any script.

Unlike GOSUBs, you don't need to be concerned about falling into the script. The parser will never execute it regardless of where you place it. No need for GOTOs to step over them.
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Give a man a fish and he will be back for more. Slap him with a fish and he will go away forever.