Reserved CAD fields for AutoCAD DWG/DXF formats

The following table lists the field names that are reserved for reading and writing DWG/DXF CAD data in ArcGIS for Desktop. You can use them to override the default output of the Export To CAD tool by adding them to the input feature class table. Fields marked as read-only are exclusive to direct-read CAD (virtual) attribute tables and cannot be used.

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	A valid value 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. For annotation, 256 sets color ByLayer.
	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 view port
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
	TxtStyle	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
	TxtHt	Double	8	The text entity height
	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
	TxtRotate	Double	8	The text entity rotation angle
	TxtValue	String	255	The text string for new text created from point features when the field CADType contains the keyword TEXT.
	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 dialog box.
	DocType	String	255	The file extension associated with the CAD format
	DocVer	String	16	The CAD format version

Reserved CAD fields for AutoCAD DWG/DXF formats.