This is the "Lesson Learned" template.

Pages that transcluded this template can be transcluded in other pages. If no semantics are needed in the latter pages, set this variable: {{#vardefine:varLLIncludeSemantics|Nee}}

It should be called in the following format:

{{Lesson Learned
|Heading=
|Summary=
|Lesson Learned Tag=
}}

Edit the page to see the template text.