Melloware

@Rene-Stoeckel i sent you an email.

@Rene-Stoeckel another email sent do you not check your email regularly?

@Rene-Stoeckel please have your team test out this reproducer: [pf-11918.zip](https://github.com/primefaces/primefaces/files/15336327/pf-11918.zip) Unzip and run `mvn clean jetty:run` and navigate to: http://localhost:8080/ Now cells are focuses and you can use Arrow keys...

Try this one: [pf-dt-accessibility.zip](https://github.com/primefaces/primefaces/files/15349155/pf-dt-accessibility.zip)

You should be able to test that here: http://20.161.11.140/showcase/ui/data/datatable/expansion.xhtml Be warned though the Datatable is a COMPLEX beast so supporting every scenario will be difficult. I disable the cell navigation...

Looks like I have a fix to make so SPACE/ENTER expands and collapses the row. Let me know if you see anything else

let me see what I can do!

@Rene-Stoeckel feel free to re-test i have fixed the SPACE/ENTER triggering the row toggler and the ARROW keys work to get around the new expanded row. http://20.161.11.140/showcase/ui/data/datatable/expansion.xhtml

@Rene-Stoeckel good questions again. 1. for the Collapse/Expand ARIA label its because the toggler does this. ```js var ariaLabel = expanded ? PrimeFaces.getAriaLabel('collapseLabel') : PrimeFaces.getAriaLabel('expandLabel'); if (rowMeta && rowMeta.key) {...

OK changes made check it out! I also cleaned up and updated the building from Source instructions to use better Markdown formatting.