Dreamweaver is so flexible because it has so many ways to customize it and make it work the way you want it to. In the options window, there are code coloring, code formatting, code hints, and code rewriting options you can adjust. But you can also change some special options within the code view itself.
felony-a serious crime (such as murder or arson). crime, criminal offence, criminal offense, law-breaking, offense, offence - (criminal law) an act punishable by law; usually considered an evil act; a long record of crimes.
An F3 felony is a shorthand expression for a class or category 3 (or III) felony in jurisdictions that use numbered offense categories. What such an offense is punishable by and whether it is punishable by more or less than an F2 felony depends completely on the laws of the jurisdiction in question.