The latest release of Clicker fixes some undocumented behavior of the Line renderer and makes it easier to add borders to shapes added to the line, like so:

This is a comment effect used in many modern charts. I’m not sure as to the utility of it, but it increases the ink-to-data ratio, thereby passing one of the tests installed by my study of Tufte.

You can use this feature in the upcoming 2.23 release.

Well, not really new. The Line renderer is now capable of producing stacked output. All you need to do is set the additive attribute to a true value!

This will be available on the 2.22 release, being uploaded to CPAN now.