<% MemberMgr.subscriptionslink %>
macro renders a link to signup-action but only if user is not a member of this site

Sourcecode in MemberMgr/macros.js:
1:   function subscriptionslink_macro(param) {
2:      if (session.user.size())
3:         Html.link({href: this.href("updated")},
4:                   param.text ? param.text : getMessage("MemberMgr.subscriptions"));
5:      return;
6:   }