Friday, July 11, 2008

Various types of anonymous blocks in AutoCAD

AutoCAD drawing database (DWG) can contain various types of anonymous (unnamed) blocks. The pseudo-names of anonymous blocks always start with an asterisk "*". You normally cannot use AutoCAD block editing commands with anonymous blocks. Examples of anonymous blocks:

*U### - general anonymous blocks
*E### - anonymous blocks from non-uniformly scaled blocks - when exploded (e.g. solids, regions)
*D### - anonymous dimensions (dim blocks)
*X### - anonymous hatches (hatch blocks)
*A### - anonymous groups
*T### - anonymous blocks in tables AutoCAD add-on applications may create also other types of anonymous blocks.

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