> why not adding the close mark in the reset plugin

Yeah, I thought about that. Finally I prefer the current style because it is highly customizable and it is obvious how it works. Moreover, the controls are already present while the page is still loading so that the page appearance does not alter after initialization.

> something tiny: any reason for setting plugin options at invocation, whhen they're already the default?

I tested if it is possible to specify alternating options. After that, I decided to leave one option per plugin so that the purpose of the `[]` syntax becomes clear.