A. ~membership~ = Title of the Member's Membership
~password~ = Member's Password
~username~ = Member's Username
~fname~ = Member's First Name
~email~ = Member's Email
~url~ = Member's Redirect URL
~ip~ = Member's IP (5.0+)
~parentusername~ = Parent's Username
~parentphone~ = Parent's Phone
~parentemail~ = Parent's Email
~parentlastname~ = Parent's Last Name
~parentfirstname~ = Parent's First Name
~surl~ = The domain name of the site (DEPRECATED)
~siteurl~ = The domain name of the site (5.0+)
~burl~ = The domain name of the site with /admin added to it (DEPRECATED)