planner gnus reference

Hello,

  I often find myself in the situation of needing to remember to reply
to an email when in gnus. I would like to use remember to store a link
to that email and/or create a task from that note like "reply to this".
I know remember allready has something like that for making a note
with a link to an email but I can't find it.

Regards,
Cezar