We love lists. A list is easily written, easily read, and easily revised. Software easily makes sense of lists too. Wiki software can do a lot for you because it is easy for it to understand your lists.
A wiki page is a list of items called the story. The items make the story something but the story as list keeps that something simple.
A page's history is a list of actions called the journal. The actions made the story and can remake any revision. We can rearrange actions to make revisions that did not exist until now.
A link adds new pages to the Lineup. The pages can come from anywhere but the find each other in this list.
A plugin can manage access to a list it holds within itself. By convention we expose elements of that list in response to 'scrubbing' the thumbnail.
Example
An early plugin was a 'chart' that collected measurements over time. Scrubbing the chart would show individual measurements.
Plugins on other pages can find the chart and visualize the list of measurements some other way. Scrubbing creates events that synchronize plugins sharing the same data. See D3 Line.
We use some css formatting to run text around items that render as thumbnails. Text flows up from underneath. The chart plugin is the first item after the 'Example' heading.