So, Gus, let me use the word legal muscle. Compared to some of the people we go after, we really don’t have that much of a muscle. But, I believe that our duty is to make sure that our investor get a reasonable return on the investment made. And maintaining and creating an IP portfolio of our size and complexity and continue adding IP innovation into it, it’s a pretty costly proposition. So, because of that, we believe that we need to go after company that uses our intellectual property, and also offer to company that may take -- maybe able to take advantage of our intellectual property. So, it comes in all size and shapes, it comes in all types of reactions, some of them are very receptive, some really want to do this, some are little bit more mature. [Ph] We don't -- absolutely do not like to sue people. I think this is really a waste of time and waste of money in my personal opinion. But, on the other hand, if people are just either ignoring us or not providing a reasonable resolution, then we have no other choice. For our shareholders, we believe we wanted -- we need to do what the minimum. So, therefore, we use the legal side very, very carefully and very limited. And we like -- we prefer to have a business solution rather than legal solution. So, now, as regarding to recurring versus perpetual, this is -- not perpetual, one time meaning, sorry. This is one of those situations where people want to -- obviously want to pay only one time and then just don’t have to remember it anymore or view it anymore. And we obviously want a recurring and the tougher one is part of like Steve said, it’s part of the negotiation. And this is why sometime it’s so unpredictable, whether it’s this quarter, next quarter. And we won't just give up because of the quarterly boundary. And that's how we think about the business.