via <https://mastodon.social/web/statuses/107067764603687669> mastodon: Implementing form filling and accessibility in the Firefox PDF viewer - Mozilla Hacks - the Web developer blog — https://hacks.mozilla.org/2021/10/implementing-form-filling-and-accessibilit... <https://hacks.mozilla.org/2021/10/implementing-form-filling-and-accessibility-in-the-firefox-pdf-viewer/> This appears to mean that Firefox on Linux can open and fill those pesky Canadian Government forms that were created with Adobe Livecycle. These used to appear as "/*Please wait... If this message is not eventually replaced by the proper contents of the document, your PDF viewer may not be able to display this type of document*/." but now open as proper forms. This must have been non-trivial to implement, because even Adobe couldn't create XFA forms outside the Windows-only Livecycle. cheers, Stewart