If a form-based logout should be filled out before leaving a site,
the Custom Unprimer URL can be set to the
<FORM ACTION> URL of the
login (fully-qualified), with any form variables (e.g. user/pass)
filled out in the query string. If the
<FORM METHOD> must be
POST instead of
GET, the URL protocol may be changed to
the pseudo-protocol "
would be submitted using the
POST method, with the given
query-string variables sent as the content. Note that the
query-string variables and values should be URL-encoded.