May 20, 2011
Through controlling properties like color and linetype for objects on the block, the objects in an inserted block can retain their original properties, can inherit properties from the layer on which they are inserted, or can inherit the properties set as current in the drawing. When you insert a block, the color, linetype, and lineweight of objects in the block retain their original settings regardless of the current settings in the drawing.
The following three choices are provided for you to determine how the color, linetype, and lineweight properties of objects are treated when a block reference is inserted.
Objects in the block inherit their original color, linetype, and lineweight properties once inserted into the drawing. The properties of objects in the block can't be changed until redefined. For this choice, it is recommended that you set the color, linetype, and lineweight properties individually for each object in the block definition: which are different from BYBLOCK or BYLAYER color, linetype, and lineweight settings when creating these objects.
Objects in the block inherit color, linetype, and lineweight properties that assigned to the current layer only. For this choice, before you create objects to be included in the block definition, set the current layer to 0, and set the current color, linetype, and lineweight to BYLAYER.
Objects inherit color, linetype, and lineweight properties that have been definitely set, that is, the properties you have set to override the color, linetype, or lineweight assigned to the current layer. If undefinately specify layer properties for the objects, then use properties of the current layer. For this choice, before you create objects to be included in the block definition, set the current color or linetype to BYBLOCK.
COLOR: Sets the color for new objects
LAYER: Manages layers and layer properties
LINETYPE: Loads, sets, and modifies linetypes
System Variables Reference
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