The optional parameter
|time=~~~~~ can be used to cause the article to be automatically tagged for speedy deletion seven days after the timestamp provided. If this parameter is omitted, the article will instead be automatically tagged for speedy deletion after it is unedited for seven days.
Add the parameter
|oou=yes if the article is about an unsourced out-of-universe subject. This changes the wording of the template to fit that type of article.
If further explanation is required (such as if a provided source is unreliable or likely falsified), details can be passed to the template via an unnamed parameter and will be displayed as written. This field can also be used to note possible sources that you cannot personally verify.
The actual template is located at Template:Verify/template.