As an aside, how did the description text ("https://starcloudinc.github.io/wp.pdf") get added to a link post? Whenever I've tried in the past, my text got splatted into a comment. Was this mod intervention?
Yes. I've been experimenting with doing more of that lately.
It's a bit of testing the waters toward what proper URL aggregation might look like. By "URL aggregation" I mean grouping together a bunch of URLs for a story, rather than just one link per submission.