Designating who does what in the figure: "????? Chain" ...
This is a subject that probably deserves its own thread - so 
I'll start it.
On 3/20/17 at 10:27 PM, trad-dance-callers(a)yahoogroups.com 
(Michael Barraclough michael(a)michaelbarraclough.com 
[trad-dance-callers]) wrote:
 On Monday, March 20, 2017 9:46:43 PM MST Dale wrote:
The move at the beginning of B2 is usually called a "men's 
chain" -- at least here in Saint Louis.  It's not a common 
move, but it's not unheard of.
I deliberately didn't call it a "men's chain", which it of 
course is :) because I see that term used ambiguously as to 
whether the chainee starts on the left or on the right of the 
chainer; which hands the chainees take to start the chain; and 
also who backs up in the courtesy turn.
Michael Barraclough
www.michaelbarraclough.com