JPEG
The abbreviation for Joint Photographic Experts Group. JPEG
is a lossy compression technique for color images. Although it can
reduce files sizes to about 5% of their normal size, some detail is lost
in the compression.
JUSTIFICATION
The method used to align paragraphs of text within a
text objects margins, either left, right, center, or full.
KERNING
Adjusting the normal space between characters in text;
also, the amount of the adjustment.
LAB COLOR
An image mode in which the color components are
divided into a lightness channel and A and B color channels.
LANDSCAPE
Orientation of an illustration or page that is wider than
it is tall.
LAYER
A level in a Canvas document used to organize parts of illus-
trations so they can be easily selected.
LAYOUT AREA
The rectangular area on screen in a Canvas docu-
ment, which represents the extent of the layout and may cover multi-
ple printed pages, depending on the size of paper used for printing.
LEADER CHARACTER
A character, usually a period (.) used to fill
space between the character before a tab space and the character
immediately following the tab space.
LEADER CHARACTER LENGTH
The length of the horizontal portion
of the witness line of a dimension object.
LEADING
Space between lines of text, measured in points from the
baseline of one line to the next.
LENS
A special object which applies effects such as filters and mag-
nification to an area in a document.
LIGHTNESS
The amount of black or white in a color.
LINE GROUP
A set of parallel lines in a hatch pattern that have iden-
tical properties.
LINE CAP
The shape of the end of a pen stroke.
LINE JOIN
The shape of the pen stroke where two path segments
meet.
LPI
Lines per inch; a measure of halftone screen resolution.
MAC OS
The Apple Computer operating system used on Macintosh
and on compatible personal computers. Mac OS X, which is based on
Unix, is Apples most recent operating system. Mac OS X Canvas
currently runs on Mac OS X and Mac OS (9.0.4+).
MACRO OBJECT
A vector object that can be used to place copies of
itself in documents; the copies remain linked to the original.
Left alignment
Right alignment
Text without kerning (top) and
with kerning applied (bottom)
2.30 pica
Leader character length
Oval used as a lens