Autodesk 00128-051462-9310 - AUTOCAD 2008 COMM UPG FRM 2005 DVD User Manual Download

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Layer Key Styles

Layer Key Styles are the heart of an automated layer standard. There are several pre-defined Layer Key Styles provided
with AutoCAD Architecture that are based on existing widely accepted industry standards. You can also define your
own Layer Key Style.

Layer Key Style Naming Conventions:

<Optional company name or other unique identifier> <Optional standard name> <Optional descriptive element>

Example Layer Key Style Names:

Example Name

Layer Key Style Description

BS1192

Layer Key Style based on the British BS1192 standard.

AIA v3

Layer Key Style based on the AIA Layer Guidelines version 3, with
provisions for deviation from Tri-Services plotting guidelines (using
named plot styles).

Company X Health Care

Layer Key Style created by “Company X” for use with their internal
layer standard, which is specifically used on medical projects.

Best Practices for Layer Key Styles:

■

Base your Layer Key Style on a structured AutoCAD Architecture Layer Standard, which defines the actual layer
naming format for your layers. Layer keys that are not based on a Layer Standard cannot take advantage of layer
key overrides.

■

Since Layer Key Styles define the color, line weight, line type and plot style for each layer they define, they should
work in conjunction with your display system. Before defining your own Layer Key Style, you should have a display
system in effect that has been tested and you should be very familiar with it.

■

Remember that several existing Layer Key Styles are already provided with AutoCAD Architecture. You may want
to start with these instead of creating a new one from scratch, modifying and adding layer keys as necessary to suit
your needs.

■

Don’t forget to specify, as part of your drawing settings the Layer Standard and Layer Key Style to automatically
load in any new drawing. Additionally you should specify that the Layer Key Style be reloaded in any existing
drawings if the “master” Layer Key Style in the library drawing has been edited recently. (Refer to “Template
Drawings” under the “Content Resources” section of this chapter).

Mask Block Definitions

Mask blocks are symbol-based style definitions that consist of a shape definition to serve as a masking object along
with optional additional graphics.

NOTE Mask blocks only affect AEC Objects and cannot mask generic AutoCAD objects such as lines, arcs, circles, etc.

Mask Block Definition Naming Conventions:

Because Mask Block Definitions are symbolic objects, naming conventions are similar to those used for standard block
definitions. Since mask block definitions are best stored as AEC Content, you may also want the name to indicate the
category of AEC Content in which the mask block definition belongs:

Autodesk 00128-051462-9310 - AUTOCAD 2008 COMM UPG FRM 2005 DVD, User Manual

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