On 6/27/2018 3:43 PM, Tom Hinds via Callers wrote:
Since you need an answer quickly i’d say it’s a term
in the folk dance world and it’s possible that different folks will define it
differently.
Personally I can see how a 4 X 4 could be a contra since it progresses in the same way
but not other formations like squares and circles.
There's also tempest formation, Sicilian circles, zias, mixers... But
it does get blurry. One local group's definition of "contra" might mean
_only_ longways and _always_ 2 swings, whereas another's definition
could encompass chestnut contras, triplets, scatter mixers and other such.
Kalia