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GLOSSARY
Absolute plotting A method of plotting in the HP-GL and HP-GL/2 graphics language where
coordinates are specified relative to the origin of the coordinate system currently in
use.
Anchor point The top left-hand corner of the PCL picture frame. You can position this on the
page using a PCL command.
Anisotropic scaling A form of image scaling using the SC command in HP-GL and HP-GL/2 mode in
which the user units can be of different sizes. Hence the entire graphics window
can be used to display the image.
ASCII The standard system for assigning number codes (0 ~ 255) to alphabetic, numeric
and control code characters.
Attribute A characteristic of a downloadable font or a character of a Downloadable font that
is represented by a number of a fixed length.
Bitmap font A font whose characters are defined as raster images. The characters that make
up a bitmap font are of a fixed size.
Bold A wider line thickness for typographical characters, used to make the text stand
out, for example, in headings.
Calling a macro A way of running a macro in which changes to the modified print environment are
not retained when the macro has finished running.
Cartridge A storage medium that you can insert into the printer cartridge slots. Cartridges
can store fonts. The advantage of using cartridges is that they allow you to use
more fonts without taking up printer memory space.
Cartridge font A font that is stored on a cartridge. These are widely available commercially.
Character cell The imaginary grid on which downloadable characters are designed.
Character code A number assigned to a character that uniquely identifies it.
Character descriptor A block of data that describes the characteristics of an individual character in a
downloadable font, such as its width and height.
Character set A selection of different characters. Characters sets normally include the alphabet
in both upper- and lowercase, the digits' 0-9, punctuation marks, common
mathematical symbols and a few other useful characters. There are also some
specialized character sets that are used for specific applications like mathematics.
A font is defined as having a particular character set.
Column A vertical sub-division of the page whose width is equal to the HMI (horizontal
motion index). The print position moves across the page one column width when
any single character is printed ( in a monospaced font), or when a space character
is printed ( in a proportionally spaced font). See also HMI.