Document attachment to email notification in RTC 4.0

Hi All

I am trying achieve any file attachment with workitem and it should email with document attached.  For this purpose using RTC4.0 Mail Template.

1. How to configure email notification with attachment attached when any file attached to workitem. Is it possible ?

2. How to mention attachment parament in  Mail Template
 exaple:
Web UI: ${workItem.URL}
Id:            ${workItem.identifier}
Project Area:  ${workItem.projectArea}
Status:        ${workItem.state}
Similar for
Attachment:  ${worktiem. <>}

Kindly help me understand this

Regards
mrpsinger