I recently read a post somewhere online describing the Bird Cage confrontation between Doc Holliday and Johnny Ringo as a "handkerchief challenge." I've seen the marker in the Bird Cage indicating the spot between the Faro table and the stage where this confrontation allegedly took place. The movie, "Tombstone," depicts this confrontation as tense but more intellectual. So, three questions: (1) Is it historically accurate that some form confrontation did occur at that spot in the Bird Cage, or was the only confrontation between them on Allen St in January 1882? (2) If so, what was the nature of the exchange? (3) how does a "handkerchief challenge" work?