Import the attachement into TW at the official site.
From the Recent tab, open the 3
Grid fill test bottom row and 3 Grid fill test top row tiddlers
Open “Grid fill test” tiddler last. Don’t worry about opening " Grid fill test 0", it’s a template.
Add and remove from the story river the Grid fill test bottom row and Grid fill test top row tiddlers and what the graphics of the other tiddlers.
gridtesttiddlers.json (2.56 KB)
Though I do think a link to a TW that does it and explains it might evoke the startlement better :-).