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Perl is often used as a glue language, tying together systems and interfaces that were not specifically designed to interoperate, and for "data munging",[6] that is, converting or processing large amounts of data for tasks such as creating reports. These strengths are linked intimately. The combination makes Perl a popular all-purpose language for system administrators, particularly because short programs, often called "one-liner programs", can be entered and run on a single command line.[citation needed]