PDF
Stands for P ortable D ocument F ormat. Created by Adobe Systems in its software program Adobe Acrobat as a universal browser. Files can be downloaded via the web and viewed page by page, provided the user is computer has installed the necessary plug-in which can be downloaded from Adobe's own web site.
PHP
Abbreviation for H ypertext P re- P rocessor.
Plug-In
A software extension that provides added capabilities to the browser, for purposes such as viewing, hearing, or saving specially formatted files. Most plug-ins are available via the creator's web page for downloading.
PNG
Stands for P ortable N etwork G raphics format, and is generally pronounced "ping." PNG is used for lossless compression and displaying images on the web. The advantages of PNG is that it supports images with millions of colors and produces background transparency without jagged edges. The disadvantages are that PNG images will not show up on older browsers, and still can be comparatively larger in file size than GIFs .
PPI
Stands for p ixels p er i nch. PPI specifies the resolution of an input device, such as a scanner, digital camera, or monitor. Web page resolution ranges from 72-96 pixels per inch. (For information on output device measurements see dpi .)
Pasteup
the process of preparing mechanicals -- in traditional publishing, positioning and pasting type and graphics on a board (and overlays). In desktop publishing, page-assembly software enables the user to do electronic pasteup.
Pica
a measurement used in typography for column widths and other space specifications in a page layout. There are 12 points in a pica, and approximately 6 picas to an inch.
Pixel (picture element)
the smallest unit that a device can address. Most often refers to display monitors, a pixel being the smallest spot of phosphor that can be lit up on the screen.
PMS (Pantone Matching System)
a standard color-matching system used by printers and graphic designers for inks, papers, and other materials. A PMS color is a standard color defined by percentage mixtures of different primary inks.
Point
a measurement used in typography for type size, leading, and other space specifications in a page layout. There are 12 points in a pica, and approximately 70 points to an inch.
Posterization
for a halftone, the reduction of the number of gray scales to produce a high-contrast image.
Printer font
high-resolution bitmaps or font outline masters used for the actual laying down of the characters on the printed page, as opposed to display on the screen.
Process color separation
in commercial printing, used for reproduction of color photographs. The various hues are created by superimposition of halftone dots of the process colors: cyan (a greenish blue), magenta (a purplish red), yellow, and black.
Proportionally spaced type
a typeface in which the set width (horizontal space) of characters is variable, depending on the shape of the character itself and the characters surrounding it.
Pull quote
a brief phrase (not necessarily an actual quotation) from the body text, enlarged and set off from the text with rules, a box, and/or a screen. It is from a part of the text set previously, and is set in the middle of a paragraph, to add emphasis and interest.
Punctuation block
in right-justified or right-aligned text, several consecutive lines that end with punctuation and make the right margin look uneven.
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