The long-form narration is quite often informational in its intent and aimed at a more select audience than the broadcast commercial. Long-form narration can be classified as corporate or documentary. One thing that's nice about the long-form narration is that, in most instances, there are not the time worries that come with commercial recording. The scripts are longer than for a commercial, the session length is longer, as well. Some long-form sessions can run half a day or more. In any type of voiceover recording situation, people may be called upon to have a video reference to record to. As with all types of recording, people come to documentation and the keeping of effective notes. People should always consider their ultimate playback situation when recording long form. Unlike commercials, which usually are played either on the radio or television, long-form narration can be played in an endless number of scenarios.