HIGs are recommendations and advice meant to help developers create better applications. Developers sometimes intentionally choose to break them if they think that the guidelines do not fit their application, or usability testing reveals an advantage in doing so. But in turn, the organization publishing the HIG might withhold endorsement of the application. Mozilla Firefox's user interface, for example, goes against the GNOME project's HIG, which is one of the main arguments for including Epiphany instead of Firefox in the GNOME distribution.