This module is rated as alpha. It is ready for limited use and third-party feedback. It may be used on a small number of pages, but should be monitored closely. Suggestions for new features or adjustments to input and output are welcome.

This is basically currently a sandbox of Module:Message box. It is intended to get things to be at parity with the main module before deploying to a lot of pages.

• Message box diff
• Config diff
• ambox.css diff
• ombox.css diff
• tmbox.css diff

Plan is something like the following:

1. Resync the couple changes from the live modules
2. Merge tested /div version but not CSS into main
3. Check for main namespace use in Special:Search for stuff that isn't ambox
4. Add /div/*mbox.css support for each box and set the relevant configuration in Module:Message box/div/configuration
   1. ombox
      • minor coordination
      • Have to convert Module:Archives to use its own TemplateStyles sheet I think is probably the best approach given the convolution with both ombox and tmbox. I got started on that a while ago, clearly need to make a return.
      • Wikipedia:Wikimedia sister projects#Specialized soft redirect templates
   2. tmbox
      • major coordination
      • tmbox min-widths, instituted with this discussion
   3. ambox (most reader visible)
      • At least one pain point phab:T402969
      • Consider in general lines like .ambox div [1]
      • Learn more ends up in a weird place
      • ensure imageCellDiv is incorporated into the CSS somehow.
5. Merge relevant configuration into Module:Message box/configuration/sandbox (namely, set div_structure to true)
6. Enable boxes of each kind one by one.
   1. Move CSS from Module:Message box/div/*mbox.css to Module:Message box/div/*mbox.css
   2. Merge Module:Message box/configuration from sandbox
   3. Fix bugs that are identified
7. Delete the /div CSS (I won't be too sad)
8. Remove main support for table versions from module, rename some things
   • Remove references to imageEmptyCell cross modules

1. cmbox
   • cmbox.css diff
2. fmbox
   • fmbox.css diff
3. imbox
   • imbox.css diff
   • Tests:
     • File:World of Warcraft.png (entirely local): no foreign copy
     • File:Information.svg (entirely local but shadows foreign): no issues with foreign copy
     • File:India roadway map.svg (local description, foreign file)
     • File:Cat playing with a lizard.jpg (foreign description and file)
     • Uses of mbox which is the imbox analog at Commons

New section on Module talk:Message box:

== cmbox migration ==
A change is planned to occur sometime starting in the next day or two in how {{tl|cmbox}} is implemented. It should help improve display at mobile resolutions now, and accessibility later. cmbox was chosen because it has lower reader-facing impact than most other message box types and it's fairly self-contained. The change to cmbox will likely pave the way for other message boxes ({{tl|fmbox}} or {{tl|imbox}} is probably next). (There is some other planning information in [[#CSS instead of tables]].)

You can expect some difference in styling from previous for a small period due to the [[WP:Job queue|job queue]], after which it should return to "normal". You should be able to correct it manually if you want with one of the usual steps ([[WP:PURGE|purge]], [[WP:NULL|null edit]], or [[Help:Dummy edit|dummy edit]]). If an issue with display persists, leave a comment here (this scenario may be possible with some unexpected setup cmboxes).

Advertised at least at WP:VPT and MediaWiki talk:Common.css:

A change to how {{tl|cmbox}} is implemented to support mobile resolutions better is occurring soon. It may cause some temporary display weirdness. Further information is available at {{slink|Module talk:Message box|cmbox migration}}.