Fixing alignment for base 1 positions. This replaces the corresponding paragraphs in Section 14.1 of draft 038. ... An element's representation is aligned to N units if P is the first position in the representation and P mod N = 1. When parsing, the position of the first unit of the data stream is 1. For example, if alignment=4, and alignmentUnits='bytes', then the element's representation must begin at 1 or 1 plus a multiple of a 4 bytes. I.e., 1, 5, 9, 13, 17 and so on. The length of the alignment fill region is measured in bits. If alignmentUnits is ‘bytes’ then we multiply the alignment value by 8 to get the *bit alignment*, B. If the current position (first position after the end of the previous element) value is bit position N, then the length of the alignment fill region is the smallest non-negative integer L such that (L + N) mod B = 1. The position of the first bit of the aligned element is P = L + N.