What is the best way to remove a kernel? Does removing a kernel
also remove all content created under that kernel (via the add
command on the web page itself)?
There are several places a kernel can be referenced from. If you have
a Seaside application then you have to remove it from the config
interface. Moreover you have to remove it from the collection
returned by "MAKernel instances". Then it should go away, with all
its content, at the next garbage-collect.
The pages are stored in the i-var 'root' within the kernel instance.
You might want to inspect/explore the model to see how it is connected: