Identifiers for entities in drawings
Entities are drawing objects such as arcs, lines, and circles that are represented in graphic format. Entities are named according to Autodesk AutoCAD naming conventions. When you publish a computer-aided design (CAD) drawing in Drawing Exchange Format (DXF) format, identifiers are associated with entities to comply with the DXF specification.
Drawing entity identifiers
The following
table shows the identifiers that are associated with drawing entities
according to the DXF specification.
| Drawing entity | Identifier |
|---|---|
| Arc | AcDbArc |
| Block/X-Reference Insert - includes SeqEnd handling | AcDbBlockReference |
| Circle | AcDbCircle |
| Ellipse | AcDbEllipse |
| Line | AcDbLine |
| MText - Multi-line text | AcDbMText |
| Point | AcDbPoint |
| Polyline/LWPolyline | AcDbPolyline, AcDb2dPolyline, AcDb3dPolyline |
| Spline | AcDbSpline |
| Text | AcDbText |
| Vertex - part of a Polyline | AcDbVertex, AcDb2dVertex, or AcDb3dVertex |
| Attribute blocks | 'AttDef', 'Attribute' |
| 3DFace | AcDbFace |
The Graphics section can control the layer visibility of block inserts only from the layer on which the block is inserted, not the layers on which the individual entities within the block reside.