If you see citation needed somewhere, try to prove it (or to prove it's wrong)
A testing needed should be fixed as soon as possible
The parameter |1= can be set to add a title to display, such as to describe what needs verification. If unset, it will display the name of the talk page.
The parameters |java=, |bedrock= and |console= can be set to indicate one or two specific editions.
Clicking on the link directs to the talk page of the page that the template was added to, where any discussion of the question should be raised and conducted. If there is no current talk page, the link will be red.