Paper × 841 mm). A1 is half the size of a sheet of A0 (i.e., 594 mm × 841 mm), such that two sheets of A1 placed side by side are equal to one sheet of A0. A2 is half the size of a sheet of A1, and so forth. Common sizes used in the office and the home are A4 and A3 (A3 is the size of two A4 sheets). The density of paper ranges from for tissue paper to for some speciality paper. Printing paper is about . Paper may be classified into seven categories: Some paper types include:
How Can We Be Silent and more!" However, no such premiere occurred and the music video release was ultimately cancelled. The second music video, "Sweet Revenge", was recorded in 2009 by 1834 Productions as part of a Deep Forgiveness devotional. A promotional video features a very short clip of Alyssa Barlow in the music video, as she is mouthing: "'til you feel this pain too." However, the song cannot be heard, as the audio uses a promotional narrator. This music video is lost, as it was omitted from Deep Forgiveness. "How Can We Be Silent" received generally positive reviews. Stephen Thomas Erlewine from "Allmusic" was