Thanks so much for this quick guide! I was familiar with using it to unblock things, but for me I wasn't getting any tooltips or hints as to what it means to click the gray option in either column, or what the difference between columns was. I learned that hovering over the "all" row at the top shows me which is local and which is global, so that's a start...
I think for future releases, perhaps another way to visually differentiate would be helpful, or additional tooltips. Even with your fantastic post, I'm not sure what the gray 'noop' parts do. Noop generally means "do nothing", so am I right to expect uBO to simply let a request through when noop is selected? In what way is noop different from clicking the green box to explicitly allow? Is noop used as a disabler for a prior option? For example, if I blocked an additional domain that uBO wasn't blocking, and later came back to change my mind but didn't want to allow it, would I use the gray noop button to "erase" my prior selection?
My apologies if this is too simple. I'm a technically-minded person, but that part of the interface is lacking in documentation and I'm reduced to trial and error to learn it.
That said, thanks again for producing such a great blocking extension. I honestly couldn't enjoy the Web without it.