Pete Daoust
The way I see this is a Promise to appear seems to be a promise you've made that you will appear somewhere....and if you've put YOUR signature on it, it seems to me that you need to appear at that somewhere, if you put under duress and all rights reserved underneath your signature, you may inform them, when you'll appear where you've promised to appeared.... :/ (hope that make sense )
Printed copy · Anthology Volume 1, page 28
