Meta tags

Nor­mal tags are about the con­tent of the page, whereas meta tags are about the qual­ity or char­ac­ter­is­tic of the con­tent of the page.

Take a look at the chil­dren pages to see what meta tags are available. All of them have de­scrip­tions for when to use them.

In gen­eral, if you make a sig­nifi­cant edit to a page, and feel that a meta tag no longer ap­plies, feel free to delete it.

Meta tag pages should have ali­ases that end with “metatag”, e.g. “toolong­metatag”.


  • Out of date

    Meta tag used when the page has a lot of in­for­ma­tion that’s obsolete

  • Too long

    Meta tag used to in­di­cate that this page is too long by Ar­bital’s stan­dards.

  • List

    Meta tags for pages that are ba­si­cally lists.

  • Just a requisite

    A tag for nodes that just act as part of Ar­bital’s req­ui­site system

  • Start

    This page gives a ba­sic overview of the topic, but may be miss­ing im­por­tant in­for­ma­tion or have stylis­tic is­sues. If you’re able to, please help ex­pand or im­prove it!

  • Needs lenses

    This page has only a tech­ni­cal in­tro­duc­tion. If you’re able to, please help by adding an in­tu­itive ex­pla­na­tion!

  • Non-standard terminology
  • Meta tags which suppress a page from being featured
  • Meta tags which request an edit to the page

    Tags that mean your page should be ed­ited.

  • Needs summary

    This page does not have a sum­mary which pro­vides an in­for­ma­tive overview of the page’s pri­mary topic.

  • Needs image

    Meta tag for pages which would be im­proved by hav­ing images

  • Formal definition

    This page gives a purely for­mal defi­ni­tion of a topic, rather than mo­ti­vat­ing, ex­plain­ing, and giv­ing ex­am­ples.

  • Needs exercises

    Add this tag to a page which doesn’t have enough ex­er­cises.

  • Guide

    Meta tag for the start page of a multi-page guide.

  • Needs technical summary

    Meta tag for pages which need a tech­ni­cal sum­mary.

  • Needs brief summary

    Meta tag for pages which need a brief sum­mary.

  • Work in progress

    This page is be­ing ac­tively worked on by an ed­i­tor. Check with them be­fore mak­ing ma­jor changes.

  • Needs clickbait

    This page does not have click­bait (a short teaser for the page dis­played on var­i­ous lists). Feel free to add it!

  • C-Class

    This page has sub­stan­tial con­tent, but may not thor­oughly cover the topic, may not meet style and prose stan­dards, or may not ex­plain the con­cept in a way the tar­get au­di­ence will re­li­ably un­der­stand.

  • B-Class

    This page is mostly com­plete and with­out ma­jor prob­lems, but has not had de­tailed feed­back from the tar­get au­di­ence and re­view­ers.

  • A-Class

    This page is well-writ­ten, high-qual­ity, and es­sen­tially com­plete.

  • Featured

    This page is has been se­lected by Ar­bital to be fea­tured and pro­moted.

  • Unassessed

    This page’s qual­ity has not been as­sessed.

  • External resources

    This lens links out to other great re­sources across the web.

  • Needs alias

    This page needs a cus­tom alias for the url.

  • Example problem
  • Needs parent

    This page is not at­tached to an ap­pro­pri­ate par­ent page. If you know where it should go, please help cat­e­go­rize it!

  • Definition

    Meta tag used to mark pages that strictly define a par­tic­u­lar term or phrase.

  • Disambiguation

    Sev­eral dis­tinct con­cepts use this page’s name, this page helps read­ers find what they’re look­ing for.

  • Needs accessible summary

    This page needs a sum­mary for a less tech­ni­cal au­di­ence.

  • Quality meta tags

    Meta tags which de­ter­mine the page’s qual­ity.

  • Formatting issues

    This page has for­mat­ting or math­jax is­sues.

  • Needs requisites

    This page has im­por­tant req­ui­sites which are not listed. If you know what they are, you could help add them!

  • Hub page

    This tag is ap­plied to pages which server the role of a “hub”: the user starts there, goes off to learn more about the topic, and then comes back. This meta tag mod­ifies the page’s UI.

  • Needs splitting by mastery

    This page seems to serve mul­ti­ple differ­ent mas­tery lev­els, and may benefit from be­ing split into sep­a­rate lenses.

  • Needs examples

    This page would benefit from more ex­am­ples of the con­cept it teaches.

  • Needs links

    This page could do with more green­links.

  • Image requested

    An ed­i­tor has re­quested an image for this page.

  • Seed

    Seeds are out­lines of pages. They’re not much use for read­ers, but can help au­thors.

  • Opinion page

    Opinion pages rep­re­sent one po­si­tion on a topic (of­ten from a sin­gle au­thor), and are not nec­es­sar­ily bal­anced or a re­flec­tion of con­sen­sus.

  • Low-speed explanation
  • High-speed explanation
  • Concept

    Add this meta tag to pages which are con­cepts.

  • Stub

    This page only gives a very brief overview of the topic. If you’re able to, please help ex­pand or im­prove it!


  • Arbital

    Ar­bital is the place for crowd­sourced, in­tu­itive math ex­pla­na­tions.