Here's a nice explanation (courtesy of StackOverflow): http://stackoverflow.com/questions/6333814/how-does-the-paste-image-from-clipboard-functionality-work-in-

Here's a nice explanation (courtesy of StackOverflow): http://stackoverflow.com/questions/6333814/how-does-the-paste-image-from-clipboard-functionality-work-in-gmail-and-google-c http://stackoverflow.com/questions/6333814/how-does-the-past... It's very useful when composing in gmail.