Editing Desktop publishing (section)

== Terminology ==
There are two types of pages in desktop publishing: [[digital page]]s and virtual paper pages to be printed on [[Page (paper)|physical paper pages]]. All computerized documents are technically digital, which are limited in size only by [[computer memory]] or [[computer data storage]] space. Virtual paper pages will ultimately be [[printing|printed]], and will therefore require paper parameters coinciding with [[paper size|standard physical paper sizes]] such as A4, letter paper and legal paper. Alternatively, the virtual paper page may require a custom size for later trimming. Some desktop publishing programs allow custom sizes designated for large format printing used in [[poster]]s, [[billboard]]s and [[trade show displays]]. A virtual page for printing has a predesignated size of virtual printing material and can be viewed on a monitor in [[WYSIWYG]] format. Each page for printing has trim sizes (edge of paper) and a printable area if [[bleed (printing)|bleed printing]] is not possible as is the case with most [[Printer (computing)|desktop printers]]. A [[web page]] is an example of a digital page that is not constrained by virtual paper parameters. Most digital pages may be dynamically re-sized, causing either the [[content (media and publishing)|content]] to scale in size with the page or the content to [[Reflowable document|re-flow]].

Master pages are templates used to automatically copy or link elements and graphic design styles to some or all the pages of a multipage document. Linked elements can be modified without having to change each instance of an element on pages that use the same element. Master pages can also be used to apply graphic design styles to automatic page numbering. [[Cascading Style Sheets]] can provide the same global formatting functions for web pages that master pages provide for virtual paper pages. [[Page layout]] is the process by which the elements are laid on the page orderly, aesthetically and precisely. The main types of components to be laid out on a page include [[wikt:text|text]], linked [[image]]s (that can only be modified as an external source), and embedded images (that may be modified with the layout application software). Some embedded images are [[Artistic rendering|rendered]] in the application software, while others can be placed from an external source image file. Text may be [[typing|keyed]] into the layout, placed, or – with [[database publishing]] applications – linked to an external source of text which allows multiple editors to develop a document at the same time.
[[Graphic design]] styles such as color, transparency and filters may also be applied to layout elements. [[Typography]] styles may be applied to text automatically with [[style sheet (desktop publishing)|style sheets]]. Some layout programs include style sheets for images in addition to text. Graphic styles for images may include border shapes, colors, transparency, filters, and a parameter designating the way text flows around the object (also known as "wraparound" or "runaround").