https://help.libreoffice.org/latest/lt/text/shared/02/01170700.html
HTML Filters and Forms
html filtersforms
https://twig.symfony.com/doc/3.x/filters/markdown_to_html.html
markdown_to_html - Filters - Documentation - Twig PHP
Twig - The flexible, fast, and secure template engine for PHP
markdown to htmlfiltersdocumentationtwigphp
https://bugzilla.mozilla.org/show_bug.cgi?id=1366058
1366058 - Intermittent svg/filters/css-svg-filter-chains/css-filter-first.html | application timed...
RESOLVED (nobody) in Core - Graphics. Last updated 2017-09-13.
svg filtersintermittentcss
https://bugzilla.mozilla.org/show_bug.cgi?id=285737
285737 - Multi-word message filters on HTML Body text may not work if lines are wrapped
RESOLVED (mscott) in Thunderbird - General. Last updated 2005-10-13.
https://twig.symfony.com/doc/2.x/filters/html_to_markdown.html
html_to_markdown - Filters - Documentation - Twig PHP
Twig - The flexible, fast, and secure template engine for PHP
html to markdownfiltersdocumentationtwigphp
https://github.blog/news-insights/the-library/html-pipeline-chainable-content-filters/
html-pipeline: Chainable Content Filters - The GitHub Blog
Feb 15, 2022 - Ever wondered how to get emoji, syntax highlighting, custom linking, and markdown to play nice together? HTML::Pipeline is the answer.
content filtershtmlpipelinegithubblog