Autocad - Block Net

AutoCAD automatically creates anonymous blocks for dimensions ( *Dnn ), hatches ( *Xnn ), and tables ( *Tnn ). These have names like *D1 , *D2 , etc. They are hidden from standard user interfaces like the INSERT command, making them useful for custom applications. Programmatically, you can create user-defined anonymous blocks by naming them "*U" .

BlockTableRecord blkdef = new BlockTableRecord(); blkdef.Name = "*U"; autocad block net