Round Dance School
'Knopf' or 'Zopf'
The 'Knopf' is danced by 4, 6, 8,… dancers. The dancers form a 'knot'. Pairs face each other and form an interlocking handhold with other pairs...
'Knopf' is Viennese slang and translates as knot.
Moves are more or less universial. Remember the abbreviations in your tongue and you are in the game.