Most testN and related templates take a single optional parameter: the name of the page to which the template is referring. If provided, this page will be cited in the warning.
test5 optionally takes two parameters:
Duration of the block (defaults to "temporarily blocked");
Name of the page to which the template is referring. If provided, this page will be cited in the warning.
Before placing any of these templates on a user's talk page, please refer to the index of test templates in case there is a more appropriate template there for you to use. This should minimize the possibility of the user being confused by your message.
Please remember to substitute the template (i.e. use {{subst:template name}} rather than {{template name}}).
Template documentation
