film has not yet been assigned a final rating, the label This Film Is Not Yet Rated is used in trailers and television commercials. Regulation of promotional materials and releases The MPA also rates film trailers, print advertising, posters, and other media used to promote a film. Theatrical trailers Rating cards appear at the head of trailers in the United States which indicate how closely the trailer adheres to the MPA's standards. Green band: When the trailer accompanies another rated feature, the wording on the green title card states, as of May 2013, "The following preview has been approved to accompany this feature." For trailers hosted on the Internet, the wording is tweaked to "The following preview has been approved for appropriate audiences." Until April 2009, these cards indicated that they had been approved for "all audiences" and often included the film's MPA rating. This signified that the trailer adheres to the standards for motion picture advertising outlined by the MPA, which include limitations on foul language and violent, sexual, or otherwise objectionable imagery. In April 2009, the MPA began to permit the green band language to say that a trailer had been approved for "appropriate" audiences, meaning that the material would be appropriate for audiences in theaters, based on the content of the film they had come to see. In May 2013, the MPA changed the trailer approval band from "for appropriate audiences" to "to accompany this feature", but only when accompanying a feature film; for bands not accompanying a feature film, the text of the band remained the same. The font and style of the text on the graphic bands (green and red) was also changed at the time the green band was revised in 2013. Yellow band: A yellow title card, introduced around 2007, exists solely to indicate trailers with restricted content that are hosted on the Internet, with the wording stipulating "The following preview has been approved only for age-appropriate Internet users." The MPAA defines "age-appropriate Internet users" as visitors to sites either frequented mainly by adults or accessible only between 9:00 p.m. and 4:00 a.m. (i.e., 21:00 through 04:00 local time). The yellow card is reserved for trailers previewing films rated PG-13 or stronger. Although official, this practice appears to have never been widespread. However, yellow band trailers are occasionally created, a notable example being the trailer for Rob Zombie's Halloween (2007). Red band: A