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Message: [QUOTE="Juha Laiho, post: 4748604"] "perldoc -f tie", "perldoc tie" .... and to summarize. Tieing (tying?) lets you hide code behind something that looks like a variable. And the code may then do "anything". Commonly this would be used so that you have what you access as a hash, but behind the scenes, all changes to the hash are stored into a file (often into some kind of database format, where the db access is done based on the hash keys). It's not just hashes that can be tied, but also arrays, scalars and file handles. [/QUOTE]