#SGML

Live, measured metrics for the hashtag #SGML from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.

hashtag.org network · sponsored

Own #sgml

This #name is available to claim. It becomes your portal on the open agent web: this very page, a keyword you rank for by an open public stake, and a verifiable identity for AI agents. Nobody else sells a page like this for every #name.

$2,449.80/ year · 4-character #name
Claim #sgml — $2,449.80/yr→Buy on hashtag.space (web3)
card via hashtag.org · tokens via hashtag.space
2
Uses / 7 days
Mastodon
2
Accounts / 7 days
Mastodon
29
Recent posts
Mastodon
~0/hr
Recent pace
Mastodon · last 29
0.2
Avg reactions / post
Mastodon · last 29
—
Reddit posts / month
Reddit search
—
Open-web mentions
hashtag.org Firehose

Day-by-day usage

measured · mas.to (Mastodon public tags API) · fetched 2026-11-10 08:58 UTC
0
11-04
1
11-05
0
11-06
0
11-07
1
11-08
0
11-09
0
11-10

2 uses by 2 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.

Related hashtags

measured · mas.to (Mastodon public search API) · fetched 2026-11-10 08:58 UTC

Live pulse

measured · mas.to (Mastodon tag timeline) · fetched 2026-11-10 08:58 UTC

Everything below is measured over the latest 29 public posts (spanning ~39770 hours).

Posting hours (UTC) — busiest: 18:00

00:0012:0023:00

Languages: English (26) · Russian (1) · Spanish (1) · Czech (1)

Avg boosts / post: 0.4

Top of the latest posts

  • @mwichary Table 3 on page 360 of "The SGML Handbook" by Charles F. Goldfarb has a table of the _standard_ assignments for #SGML delimiters which is configurable in the SYNTAX DELIM part of the declaration. STAGO (<), ETAGO (</), MDO (<!), P

    Richard Penner@Arpie4Math@mathstodon.xyz♥ 3↻ 02025-12-13 18:32 UTCView post →
  • Well, “Episode 21: Keynote — John McCarthy” actually has a recording and he gives that quote at timestamp 1:13:15: http://www.oopsla.org/oopsla2007/index56d8.html http://www.oopsla.org/podcasts/Keynote_JohnMcCarthy.mp3 “When W3C decided not

    tajpulo@tajpulo@typo.social♥ 1↻ 02024-11-26 15:57 UTCView post →
  • The statement “`<input checkbox>` is per SGML rules equivalent to `<input type="checkbox">`, but HTML parsers treat it as `<input checkbox="">`” is… #sgml #html

    Jens Oliver Meiert@j9t♥ 1↻ 22024-10-11 08:42 UTCView post →

What “sgml” means

Wikipedia

The Standard Generalized Markup Language is a standard for defining generalized markup languages for documents. ISO 8879 Annex A.1 states that generalized markup is "based on two postulates":Declarative: Markup should describe a document's structure and other attributes rather than specify the processing that needs to be performed, because it is less likely to conflict with future developments. Rigorous: In order to allow markup to take advantage of the techniques available for processing, marku

“Standard Generalized Markup Language” on Wikipedia (CC BY-SA) →

#sgml across platforms

every network with a public tag surface

Follow #sgml straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.

Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/sgml