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Previousfilm at 11 Up= F = NextFinagle's Law

filter n.

[very common; orig. Unix] A program that processes an input data stream into an output data stream in some well-defined way, and does no I/O to anywhere else except possibly on error conditions; one designed to be used as a stage in a `pipeline' (see plumbing). Compare sponge.

Previousfilm at 11 Up= F = NextFinagle's Law