Physical page

The paper or envelope on which the printer prints.

Picture frame

The area of the physical page in which HP-GL and HP-GL/2 graphic images can be

 

printed.

Pitch

The number of characters in one inch of text. Only applicable to monospaced

 

(fixed pitch fonts.)

Plot

A drawing produced using the HP-GL and HP-GL/2 graphics language. So called

 

because the language was originally invented for use with plotters.

Plotter units

See graphics units.

Point

The standard unit of measurement for character height. Equal to 1/72".

Point factor scaling

A form of image scaling using the SC command in HP-GL or HP-GL/2 mode in

 

which the user units and the location of the scaling point P1 are specified in terms

 

of graphics units.

Point size

See height.

Polygon

A shape consisting of one or more closed groups of connected lines.

Polygon buffer

An area of printer memory in which you can store one or more polygons and sub-

 

polygons defined using HP-GL and HP-GL/2 commands. Some HP-GL and HP-

 

GL/2 commands use the polygon buffer automatically.

Portrait

The orientation in which the side edges of the page are longer than the top edge.

Posture

A component of a font's style - whether it is upright or italic.

Primary font

In LaserJet mode the printer maintains two current font settings. The primary font

 

is the first of these.

Print model

A way of describing the interaction between different graphic elements ( source

 

image, pattern and destination image ).

Printable area

The area of the page on which the printer can print.

Print position

The position from which printing of the next character or graphic object will begin,

 

providing that no operations that change the print position are performed in the

 

interim.

Proportional spacing

Fonts intended for high quality typographic output use a method of character

 

spacing in which the space occupied by a single character on a line of text depends

 

on the individual design of the character. This is known as proportional spacing.

 

Scalable fonts are almost invariably proportionally spaced.

RAM

Random Access Memory. The printer's memory in which fonts and macros can be

 

stored and where pages that are to be printed are composed.

Raster graphics

A method of representing a graphic image as a series of zeroes and ones that

 

correspond to white and black dots respectively.

Relative plotting

A method of plotting in the HP-GL and HP-GL/2 graphics language where

 

coordinates are specified relative to the point at which the last graphics command

 

terminated.

 

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