Role of inkpad namespace in xml doc?

[nerdmanship]

Hi

I do lots of vector animation in browsers and I have a habit of cleaning up my SVG docs and fully understanding what's going on in them. I'm considering using Inkpad in my workflow, but during my initial exploration I found the Inkpad namespace, which I can't find any documentation for.

Why is it there? What functionality is added with this? Throughout my doc I found "inkpad:layername" and "inkpad:mask" attributes, what are these?

It seems like I can safely remove these from the doc once they are in the web project, but I assume some functionality will be lost if I would open the SVG in Inkpad again.

A comment on Inkpad namespace would be very much appreciated!

Thanks,
Johan