<% Membership.url %>
macro renders a member's url as text or link

Sourcecode in Membership/macros.js:
1:   function url_macro(param) {
2:      if (!this.user.url)
3:         return;
4:      if (param.as == "link")
5:         Html.link({href: this.user.url}, this.user.url);
6:      else
7:         res.write(this.user.url);
8:      return;
9:   }