From 2021pedia

This is the documentation page for Module:Sandbox

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Scribunto testing area[edit]

This is not an actual Lua module. It exists to provide a convenient pseudo-namespace for code testing, hopefully preventing the main Module: namespace from becoming littered with experiments, as Lua modules cannot exist as subpages in the User: namespace.

Please name your experimental modules in the following format to help keep things tidy:

Module:Sandbox/Your User Name

<inputbox> type=create preload=Module:Sandbox/new editintro=Template:New module editintro prefix=Module:Sandbox/ placeholder=Insert your username here button label=Create new sandbox module </inputbox> If you need more Module sandboxes, create subpages of the sandbox thus created.

You can use Special:PrefixIndex/Module:Sandbox to list modules in this area.