“…The whole process is iterative, meandering, and prone to branching [BPW∗93, SvW08]: sometimes, the analyst will backtrack to explore a different avenue of inquiry; sometimes entire paths will be abandoned; and sometimes the current strand of investigation proves to be the right one. Supporting this type of workflow is a challenge in itself, and in collaborative scenarios it is also a challenge to share, hand off, and communicate insights from such a process, as amply pointed out in past work [HA08, SHA08, KPHH12, MT14, RTH18, ZGI∗18]. In addition, there is no watertight boundary between analysis and presentation [PC05]; sometimes a presentation may even return back to exploration.…”