Precisely right. They are not a 'troll', because they actually sell what they have patented. But it seems that what they have patented is little more than a sof

Precisely right. They are not a 'troll', because they actually sell what they have patented. But it seems that what they have patented is little more than a software idea; scarcely more clever (though infinitely more monetizable) than, say, some CSS hacks I've seen. I'm not sure how this particular patent promotes the Progress of Science and the useful Arts; it seems merely to retard them.