For visualization? I haven't. What would be interesting to write about in your opinion? I wrote a few posts about Alloy's syntax and how to use it for logic puzzles but it didn't go anywhere.
For visualization. There are a few text-to-model tools out there - PlantUML, Mermaid, ZenUML, for instance - but they're mostly aimed at OO, and if the authors are still working on them they're mainly looking at sequence diagrams.
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