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Thus, a representation that compresses the storage size of a file from 10 MB to 2 MB yields a space saving of 1 - 2/10 = 0.8, often notated as a percentage, 80%. For signals of indefinite size, such as streaming audio and video, the compression ratio is defined in terms of uncompressed and compressed data rates instead of data sizes:
A concertina fold, also known as a zig-zag fold, accordion fold or z-fold, is a continuous parallel folding of brochures and similar printed material in an accordion-like fashion, that is with folds alternatively made to the front and back in zig-zag folds. Because they do not nest (as in Letter Folds) panels can be the same size.
A pamphlet is an unbound book (that is, without a hard cover or binding). Pamphlets may consist of a single sheet of paper that is printed on both sides and folded in half, in thirds, or in fourths, called a leaflet or it may consist of a few pages that are folded in half and saddle stapled at the crease to make a simple book.
When audio files are to be processed, either by further compression or for editing, it is desirable to work from an unchanged original (uncompressed or losslessly compressed). Processing of a lossily compressed file for some purpose usually produces a final result inferior to the creation of the same compressed file from an uncompressed original.
Although, initially, a paper document that can be folded into a template, pamphlet, or leaflet, a brochure can also be a set of related unfolded papers put into a pocket folder or packet or can be in digital format. A brochure is a corporate marketing instrument to promote a product or service.
A4 (roughly letterhead size) A5 (roughly half letterhead size) DL (compliments slip size) A6 (postcard size) Flyers are inexpensive to produce and they required only a basic printing press from the 18th century to the 20th century. Their widespread use intensified in the 1990s with the spread of less expensive desktop publishing systems.
Octavo metrics compared to the folio and quarto. Octavo, a Latin word meaning "in eighth" or "for the eighth time", [1] (abbreviated 8vo, 8º, or In-8) is a technical term describing the format of a book, which refers to the size of leaves produced from folding a full sheet of paper on which multiple pages of text were printed to form the individual sections (or gatherings) of a book.
The terms are even more distorted in their digital counterparts. In computing, the word "folder" (or, in some cases, "file folder") is often used as a synonym for "directory", while the word "file" is universally used for actual data items on a disk (sometimes called "documents", especially on the Apple Macintosh).