User`s guide

276 ■ Chapter 4: Drawing Organization and Inquiry Commands
Example of Object Properties
It is common practice in 2D drafting to represent a feature or surface that is obscured by another with
a hidden linetype. The hidden line indicates that the feature exists behind the current visible surface.
Another common practice is to use colors to distinguish between objects in complex drawings and
assigning different colors to different object types.
In the following image, the object lines are shown with the Continuous linetype and a unique color.
The section line is shown with the Phantom linetype and unique color. The hole centerlines are shown
with the Centerline linetype and a unique color. The hidden edge lines are shown with the Hidden
linetype and a unique color. More than likely, the information in this drawing is organized into layers
which determine the color and linetype of these objects. However, at a glance, it would be impossible
to know precisely how the object properties have been assigned without further investigation.
Object lines shown as Continuous linetype.
Hole centerlines shown as Center linetype.
Hidden edge lines shown as Hidden linetype.
Section line shown as Phantom linetype.