 What does the title BBB refer to?
I sometimes refer to their overlap or common ground as the BBB definition of OA. My definition here is the BBB definition reduced to its essential elements and refined with some post-BBB terminology (green, gold, gratis, libre) for speaking precisely about subspecies of OA. Note that all three legs of the BBB definition go beyond removing price barriers to removing permission barriers, or beyond gratis OA to libre OA. Moreover, any kind of content can be digital: texts, data, images, audio, video, multimedia, and executable code. Their mission to advance research leads them directly to logic of OA: With a few exceptions, such as classified research, research that is worth funding or facilitating is worth sharing with everyone who can make use of it.
 The cities where most of the early meetings were held
 The type of certification a journal needs to be an OA venue  The Bureau in charge of decisions about OA  The cities where most of the early meetings were held  An organization beting developed to gather public opinion about OA