<% User.sysmgr_lastvisit %>
macro renders the timestamp of last visit

Sourcecode in User/sysmgr_macros.js:
1:   function sysmgr_lastvisit_macro(param) {
2:      // this macro is allowed just for sysadmins
3:      if (!session.user.sysadmin)
4:         return;
5:      if (this.lastvisit) {
6:         fmt=param.format ? param.format : "dd.MM.yyyy HH:mm";
7:         res.write(this.lastvisit.format(fmt));
8:      }
9:      return;
10:  }