Hover over a node to:
- show title of the corresponding post on the graph
- read a preview of the post, in this space
- hovered node has yellow border.
Click a node to:
- show the post in the space to the right
- show author's bio, in this space (click author's name in post to restore if needed)
- emphasize links from that node to other nodes (links among other nodes are faded)
- clicked node has green border.
Hover over the edges for an explanation, in this space.