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Spoon

Had a look at this again, and there was a wee bug.

rosettacode>Kernigh

Delete only use of ((Property:Task)). This page already uses Property:Implementation of task, and Wireworld already uses Property:Is task.

Spoon

This is code I (Johnny Morrice) wrote myself. It's licensed under the GPLv3, which would make its use in GNU Free Documentation acceptable.