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CAD tip # 6475:

Question CAD
% platform category

What is the difference between the properties BYBLOCK and BYLAYER?

AutoCAD entities (objects) grouped in a block can have two special properties: BYBLOCK (by block) and BYLAYER (by layer). These properties influence how the entity will be displayed when the block is inserted (referenced) in a drawing. You can use these values for the color, linetype, linewidth and plot style properties.

The BYLAYER setting for block components means - inherit the properties from the layer the block is inserted in.
The BYBLOCK setting for block components means - inherit the properties from the properties of the block (the block reference/insertion).

So if you have e.g. a block inserted in the layer LAY (colored green) and you assign it (Ctrl+1) the color red, a line (in the block) with the color BYLAYER will be green and a line with the color BYBLOCK will be red.

Please note that the property names are localized in non-English AutoCAD versions. So it could be e.g. VONLAYER and VONBLOCK (German), DUCALQUE and DUBLOC (French), DLEHLAD and DLEBLOK (Czech).

ACADLT

* CAD

13.1.2009 8818x

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applies to: AutoCAD · AutoCAD LT ·

See also:
Tip 9265:	RENAME on steroids - complex renaming of AutoCAD objects.
Tip 8857:	Move all blocks containing a specific layer to that layer.
Tip 8415:	Recolor entities to the color of their layer.
Tip 8128:	How to quickly get the real color of a drawing entity?
Tip 6501:	Convert entities or entity colors to separate layers.

Selected tip: How to find the total number of objects in a drawing?

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