Degrelle - Thanks for the response. But, the link you provided did not work for me. If you can, please link us a picture of the cappa that is "folded and curtailed" as opposed to the one that is full unfolded. And, if you cannot find a picture of the folded and curtailed, please describe it in more detail.
And, can a traditionalist bishop wear a folded and curtailed one in this crisis? I don't know the regulations surrounding each. Perhaps that book link your posted would provide, but it didn't work for me. Perhaps you can copy and paste the important part explaining it and answering my questions.