Reserved CAD fields for AutoCAD DWG and DXF

The following table defines reserved CAD field schema for reading and writing supported AutoCAD entities.

Category	Field name	Data type	Length	Description
Entity properties	FID	ObjectID	4	A unique feature identifier. Read-only.
	Shape	Geometry	-	The ArcGIS area shape representing the spatial extent of the CAD file. Read-only.
	Entity	String	16	The CAD entity. Read-only.
	Handle	String	16	A unique CAD entity identifier. Read-only.
	Angle	Double	8	Rotation angle in degrees. Point and Annotation feature classes only.
	<attribute name>	Text, Long, or Double.	8	A named user-defined textual entity used for storing data in a block insert.
	BlkColor	Short	2	The color assigned to the block expressed as an integer.
	BlkLinetype	String	255	The line type of the block with which the entity is associated.
	BlkLineWt	Short	2	The line weight of the block with which the entity is associated.
	CadType	String	255	Overrides the default output entity type. For example: 3D Polyline outputs POLYLINE entities instead of the default LWPOLYLINE. Other entity types require companion fields that specify parameters. For example: INSERT requires the RefName field to specify the block name. TEXT requires the TxtValue field to specify the text string.
	Color	Short	2	The display color of the entity expressed as an integer.
	Elevation	Double	8	The z-coordinate value of an entity. For entities with multiple z-coordinates, this is the z-coordinate for the first point of the entity as defined by the CAD application.
	EntColor	Short	2	The assigned color of the entity expressed as an integer.
	EntLinetype	String	255	The assigned line type of the entity.
	EntLineWt	Short	2	The assigned line weight of an entity.
	ExtX	Double	8	The x-coordinate extrusion value. Read-only.
	ExtY	Double	8	The y-coordinate extrusion value. Read-only.
	ExtZ	Double	8	The z-coordinate extrusion value. Read-only.
	LineWt	Short	2	The display line weight of an entity.
	Linetype	String	255	The display line type of the entity.
	LTScale	Double	8	The scale of the entity's line type.
	RefName	String	255	The name of the parent object in which the entity resides.
	ScaleX	Double	8	The x-coordinate scale value. Point and Annotation only.
	ScaleY	Double	8	The y-coordinate scale value. Point and Annotation only
	ScaleZ	Double	8	The z-coordinate scale value. Point and Annotation only.
	Thickness	Double	8	The extrusion distance of an entity. Read-only.
Layer properties	Layer	String	255	The CAD drawing layer name.
	LyrColor	Short	2	The CAD drawing layer color expressed as an integer.
	LyrFrzn	Short	2	The freeze/thaw state of the CAD drawing layer.
	LyrHandle	String	16	A unique CAD drawing layer identifier. Read-only.
	LyrLinetype	String	255	The line type of the CAD drawing layer in which the entity resides.
	LyrLineWt	Short	2	The line weight of the CAD drawing layer in which the entity resides.
	LyrLock	Short	2	The lock/unlock state of the CAD drawing layer.
	LyrOn	Short	2	The on/off state of the CAD drawing layer.
	LyrVPFrzn	Short	2	The freeze/thaw state of the CAD viewport.
Text properties	FontId	Short	2	The ArcGIS text symbol ID. Read-only.
	Height	Double	8	The text height in CAD units.
	LnSpace	Short	2	The multiline text spacing type. Read-only.
	SpaceFact	Double	8	The multiline text spacing factor. Read-only.
	Style	String	255	The text style.
	Text	String	255	The text string.
	TxtAttach	Short	2	The multiline text attachment parameter.
	TxtBoxHt	Double	8	The text entity bounding box height.
	TxtBoxWd	Double	8	The text entity bounding box width.
	TxtDir	Short	2	The multiline text direction parameter.
	TxtFont	String	255	The text entity CAD font.
	TxtGenType	String	32	The text generation type. Read-only.
	TxtJust	String	32	The text entity justification parameter. Read-only.
	TxtMemo	String	2048	The entire text string not truncated.
	TxtOblique	Double	8	The text entity oblique angle. Read-only.
	TxtRefWd	Double	8	The multiline text width factor. Read-only.
	TxtWidth	Double	8	The text entity width factor. Read-only.
	VertAlign	String	32	The text entity vertical alignment parameter. Read-only.
Document properties	DocName	String	255	The file name of the CAD file including the extension.
	DocPath	String	4096	The full path of the CAD file including the file name. DocPath can be used to export a single feature class to multiple CAD drawings when Ignore Paths is unchecked on the Export To CAD tool.
	DocType	String	255	The file extension associated with the CAD format.
	DocVer	String	16	The CAD format version.

Reserved CAD field schema for AutoCAD DWG and DXF