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CAD tip CAD tip # 6210:

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Q - question

Various types of anonymous blocks in AutoCAD.

A - answer 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, DGN linetype blocks
  • *T### - anonymous blocks in tables
  • *S### - anonymous blocks of 3D views (Fusion360)
AutoCAD add-on applications may create also other types of anonymous blocks.
ACAD
100% *  CAD 
10.7.2008    15129×  
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applies to: AutoCAD ·

See also:
Tip 11751:toMulti converts polylines to multi-lines driven by a definition table.
Tip 9324:How to remove all anonymous groups from an AutoCAD drawing?
Tip 9044:How to select all anonymous blocks in a DWG?
Tip 5197:How to explode a MINSERTed block?
Tip 4987:How to quickly create an anonymous block?


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