2011

Table Of Contents
grips Small squares and triangles that appear on objects you select. After
selecting the grip, you edit the object by dragging it with the pointing device
instead of entering commands.
ground plane The XY plane of the user coordinate system when perspective
projection is turned on. The ground plane displays with a color gradient
between the ground horizon (nearest to the horizon) and the ground origin
(opposite the horizon). See also sky and underground.
guide curves Lines or curves that intersect each cross section of a lofted solid
or surface and that define the form by adding additional wireframe information
to the object. (LOFT)
handle A unique alphanumeric tag for an object in the program's database.
heads-up display (HUD) The process of transparently displaying user interface
elements on top of or over the drawing area without obscuring the view of
the objects drawn on the drawing area.
helix An open 2D or 3D spiral. (HELIX)
Help menu In the AutoCAD for Mac, you can find Help on the Mac IOS menu
bar or by pressing Fn-F1.
HLS For hue, lightness, and saturation. A system of defining color by specifying
the amount of hue, lightness, and saturation.
Home view A special view saved with the drawing that is controlled through
the ViewCube tool. The Home view is similar in concept to the default, initial
view presented when a drawing is first opened.
horizontal landing An optional line segment connecting the tail of a leader
line with the leader content.
Illuminance In photometry, illuminance is the total luminous flux incident
on a surface per unit area.
indirect bump scale Scales the effect of the base materials bump mapping
in areas lit by indirect light.
indirect illumination Illumination techniques such as global illumination
and final gathering, that enhance the realism of a scene by simulating radiosity,
or the interreflection of light between objects in a scene.
initial environment The variables and settings for new drawings as defined
by the default drawing template, such as acad.dwt or acadiso.dwt. See also
template drawing.
1020 | Glossary