basic question on Also-Control: header

[Lisa Ungar]

Hi,

I was trying use the follow headers:

Newsgroup: Anothergroupname
Subject: csmg newgroup groupname
From: your at name
Approved: your at name
Also-Control: newgroup groupname

to both create a new group and post the article to an existing group at the
same time.

The document says that Also-Control would treat it both as an regular
article and then follow the control actions listed in the line.

Using the above actions, it just appended it as a regular actticle to
anothergroupname and didn't create a new group.  Is Also-Control only meant
to be used like a Supercedes?:

Thanks for your help,

Lisa