Rehabilitated racehorse class?

[Denzel]

Im going to start showing my beastie this summer I hope, only local shows and mostly dressage and SJ. I've just noticed a "rehabilitated racehorse" class at my local show. What involved in that normally? I know I have to be able to prove his history etc which I can do, but what actually happens in the class?

 

[fleabittengrey]

It will be just exactly like a normal showing class, with a walk/trot/canter/gallop group go around and mostly likely an individual show at club level - but a showing class just for ex racers