From Rosetta Code
This example is incorrect. It does not accomplish the given task. Please fix the code and remove this message.

Insert this message above a programming example using the text {{incorrect|lang}} or {{incorrect|lang|Explanation of the problem.}}, where lang is the programming language used. This will put the page in Category:Examples needing attention and Category:Lang examples needing attention, and apply Property:example requires attention.

This is a template. There are many others. See Category:RCTemplates for a complete list of templates.