Template:User Sandbox

Usage
This template is used to indicate that a particular page is a user's personal sandbox (as opposed to the communal sandbox). By default, it tells users not to edit the sandbox without the owner's permission, as is customary, but the template also accepts an argument that alters it to welcome other users to edit if the user so wishes. (Note that this template has no control over actual edit permissions, so other users still have the ability to edit the page, regardless.) Either way, it automatically adds the page to Category:User sandboxes. To use this template, type the following:

The full code is as follows: