- There's no **?** help icon in the Wikicon set.
- Wikicon/Wikifont has [[ https://commons.wikimedia.org/wiki/File:Sun_help.svg | Sun help.svg]], but without {T89200} its semantics are a mystery.
- OOjs UI has a black on transparent '(?)' icon [[ https://github.com/wikimedia/oojs-ui/blob/d828bc3e79ee549d9f257b59e156c0d0ebe694d4/src/themes/mediawiki/images/icons/help-ltr.svg | help-ltr.svg ]] used for the CSS class `.oo-ui-icon-help`, used in VisualEditor's editing bar.
- VE's icon is on commons as [[ https://commons.wikimedia.org/wiki/File:VisualEditor_-_Icon_-_Help.svg | File:VisualEditor_-_Icon_-_Help.svg]] and has some usage, particularly on frwiki.
- the `mediawiki.helplink`RL module for the "help indicator" on wiki pages uses a slightly different version of this icon in [[ https://phabricator.wikimedia.org/diffusion/MW/browse/master/resources/src/mediawiki/images/help.svg | resources/src/mediawiki/images/help.svg ]]
- Echo has a 19-pixel white on gray '(?)' help icon [[ http://git.wikimedia.org/raw/mediawiki%2Fextensions%2FEcho.git/bd64eafe846746db07ef874fbf4608a1465e731b/modules%2Fspecial%2FHelp.png | special/Help.png ]] used for the CSS id `#mw-echo-moreinfo-link` on a logged-in user's Special:Notifications page.
- (Echo also has an unoptimized 13-pixel version [[ http://git.wikimedia.org/raw/mediawiki%2Fextensions%2FEcho.git/bd64eafe846746db07ef874fbf4608a1465e731b/modules%2Foverlay%2FHelp.png | modules/overlay/Help.png ]] that's10x more bytes, but I think it's unused.)
- Echo's icon is on commons as [[ https://commons.wikimedia.org/wiki/File:Echo_question.svg | File:Echo question.svg]] and is used by the [[ https://commons.wikimedia.org/wiki/Help:Gadget-ImageAnnotator | ImageAnnotator gadget ]]
- I didn't research
- extensions/Collection/images/silk-help.png
- extensions/Narayam/resources/images/help.png
- extensions/Translate/resources/images/help.png (c0c4771eee4a517536f5055bdcd4d433c08e19ce / [[https://wikimedia.mingle.thoughtworks.com/projects/language_engineering/cards/410|#410]]) and help.svg (014b5632fcc6a4200d519cf7f86e94c09639af8f)
- extensions/UniversalLanguageSelector/resources/images/help.svg and help.png
- extensions/WebFonts/resources/images/help.png