About the Sandbox
From Electrical Engineering TA Handbook
The Wikipedia Sandbox is a Wikipedia namespace page designed for testing and experimentation with wiki syntax. Sandboxes in other languages can be found in a list on the lower left of the English Wikipedia Sandbox, and the Meta-Wiki has a sandbox at Meta:Sandbox. There is also a sandbox at Wikipedia talk:Sandbox for testing talk page techniques, and a range of template sandboxes from Template:Tl to Template:Tl for testing Template-space techniques.
However, while using sandboxes in other languages may be useful on certain occasions, it is important to keep in mind that, unless interwiki links are used, each Sandbox can only access the links, images, and templates on the Wikipedia it is located on.
The Sandbox was created as a place with fewer rules and policies than other pages on Wikipedia. For example, you don't have to follow the Manual of Style or reach community consensus before making a major change. However, it must not be used for malicious purposes, and policies such as no personal attacks and civility still apply.
If you have a username, you can create your own sandbox in your userspace. For example, if your username was "Angela," your sandbox could be at "User:Angela/Sandbox." You can find your user sandbox here. (And if it doesn't exist yet, feel free to create it!)ca:Viquipèdia:Sobre les proves ja:Help:サンドボックス tt:Wikipedia:Sınawtirä turında