Links in text
patternist.app — any address becomes a link on its own
[Patternist](https://patternist.app) — puts a link on a word
While editing you see the source; the site shows the link.
Merging groups
Drag a tile onto another one and hold it there for a second. The
target says "merge into …" and its frame turns dashed — release and the
image moves into that group. Drop quickly and it is just a reorder.
An emptied group disappears.