文件名称:blockview.NET-V1
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Each entity is a AutoCAD drawing has a unique identifier, this is a
hexadecimal number, which is stored in a character string in DDVue.
MicroStation DGN drawings also have these handles but are calledElement ID instead
hexadecimal number, which is stored in a character string in DDVue.
MicroStation DGN drawings also have these handles but are calledElement ID instead
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