As I understand it - as for any minutes, the only thing necessary is to record actions - so it would only require a record of the votes taken.  Since no votes are taken at an informational meeting then no details of the meeting are required other than the opening, attendance, adjournment, etc.  However, although not a requirement, I would probably include enough detail to summarize the discussion and note enlightening details of the discussion.  Of course the problem is that by doing this the person taking minutes may inject their own biases and opinions into the matter by only including points they personally find enlightening.
-------- Original Message --------
Subject: Re: Minutes for town meeting informational meetings
From: "Wheaton-Book, Megan" <[log in to unmask]>
Date: Wed, February 17, 2016 4:34 pm
To: [log in to unmask]

Hi Annette,
24 V.S.A. § 1152 Record of proceedings of meetings, states that “The clerk shall record all proceedings of all town meetings and his record shall be deemed to be the true and official record of all action taken at that meeting provided it has been approved and attested by any two of the following town officers present at the meeting: moderator, selectmen, and justices of the peace.”
Statute is not clear about what does not constitute a town meeting, as such the “pre-town meeting informational meeting” could be considered a town meeting, especially if the meeting is open to the entire town.
Megan Wheaton-Book
Records Analyst II
Vermont State Archives & Records Administration
1078 U.S. Route 2, Middlesex
Montpelier, VT 05633-7701
I am not an attorney, and the information provided above should not be construed as legal advice, but rather general information.
From: Vermont Municipal Government Discussion Network [mailto:[log in to unmask]] On Behalf Of Annette Cappy
Sent: Wednesday, February 17, 2016 4:04 PM
To: [log in to unmask]
Subject: Minutes for town meeting informational meetings
Having a little discussion here…..Do town clerks in other municipalities take minutes at pre-town meeting informational meetings?
Elections Division of Sec. State- please feel free to comment.
Thanks all.
Annette L. Cappy
Brattleboro Town Clerk
230 Main Street, Suite 108
Brattleboro. VT  05301
ph 802-251-8129
fax 802-257-2312