I'm not sure how many folks have had much of chance to use --enable-experimental-code-block-annotations to add in the copy-to-clipboard or the extended highlighting capability for code blocks. Since it's a Swift 6.3 feature, it's comparatively new.
I'd like to propose that we remove the experimental from this feature capability, and further - float the idea of enabling it by default. This has a notable effect that will change all the existing content to enable a copy-to-clipboard functionality by default on the default presentation of DocC content.
For prior discussion and details on this feature, see Code Block Options Flag Name – `--enable-experimental-code-block-annotations` and RFC: Additional Options for Code Blocks (highlight, strikeout, wrap, line numbers)