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5 To re-import the layer key style from the layer standard you
specified at the start of each drawing session, select Always import
Layer Key Style when first used in drawing.
Selecting this option has the effect of checking the current drawing
to see if the selected layer key style exists. If it does exist, the date
and time stored on it are compared with the external file. If the
external layer key style drawing is newer, then it re-imports the
layer key style and standard. This action occurs each time the
drawing file is opened; therefore, to force a re-import of the layer
key style, you must close and reopen the drawing.
6 Define the on/off behavior of secondary components within an
object.
You can place different components of an AEC object on different
layers. This is accomplished with the object’s display properties.
For example, the current layer key style might place a wall on the
layer named A-Wall, while the wall’s material definitions place
its internal boundaries on the layer named A-Wall-Comp. Turning
off the layer A-Wall would typically make the entire wall
(including its internal boundaries) invisible, even though those
components were assigned to a different layer. Selecting Immediate
and independent layer on/off control of display components
allows the internal boundary components on A-Wall-Comp to
remain visible, even though the primary object’ s layer (A-Wall in
this case) is off. This behavior can be desirable in some plan
representations.
NOTE Freezing the primary object’ s layer (A-Wall in this case) makes
the entire wall, including its internal boundaries, invisible regardless
of the value of this setting. This setting applies only to the Off layer
state.
Then…If you want to…
clear Immediate and independent
layer on/off control of display com-
ponents.
turn off secondary object compon-
ents on different layers when the
main component layer is turned
off
select Immediate and independent
layer on/off control of display com-
ponents.
turn on and off secondary object
components independently of the
main object component layer set-
tings
200 | Chapter 4 Creating and Saving Drawings
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