It's especially clear in the "inline dict" example. I really like it!

  props:: mime_type: "text/html", encoding: "gzip" # Inline dict.

▲ OJFord 7 hours ago | parent [-]

But that's not done for human readability, that's done for machine parsing? A human would understand just as well:

  props: mime_type: "text/html", encoding: "gzip" # Inline dict.

	▲	lucketone 6 hours ago \| parent \| next [-]
		My mind has a feeling that this might be possible interpretation: `props: [mime: [html, encoding:[gzip]]]` (Even if not legal, to be sure, I must backtrack and concentrate on this particular piece) There are many different humans. I definitely like the idea to separate “:: vs :”.
	▲	F3nd0 6 hours ago \| parent \| prev [-]
		For me, it’s clearer with a double colon. Not intuitive, but extremely easy to get used to. When I see the first colon introduce a list, I have to go out of my way to not see the other colons as introducing lists.