Editing Book (section)

==== Size ====
{{Main|Book size}}
The size of a book is generally measured by the height against the width of a leaf, or sometimes the height and width of its cover.<ref>{{Cite book |last1=Roberts |first1=Matt |title=Bookbinding and the conservation of books: a dictionary of descriptive terminology |last2=Etherington |first2=Don |date=1982 |publisher=Library of Congress |others=Library of Congress |isbn=978-0-8444-0366-3 |location=Washington, D.C.}}</ref> A series of terms commonly used by contemporary libraries and publishers for the general sizes of modern books ranges from ''[[folio]]'' (the largest), to ''[[quarto]]'' (smaller) and ''[[octavo]]'' (still smaller). Historically, these terms referred to the format of the book, a technical term used by printers and bibliographers to indicate the size of a leaf in terms of the size of the original sheet. For example, a quarto was a book printed on sheets of paper folded in half twice, with the first fold at right angles to the second, to produce 4 leaves (or 8 pages), each leaf one fourth the size of the original sheet printed – note that a ''leaf'' refers to the single piece of paper, whereas a ''page'' is one side of a leaf. Because the actual format of many modern books cannot be determined from examination of the books, bibliographers may not use these terms in scholarly descriptions.