Underlay References

autocad_entity: autocad_underlay

Underlays reference external files and consist of two parts:

• Underlay Reference

• Underlay Reference definition

The Underlay Reference is a feature with a point geometry that represents the location where the contents of the external file should be drawn. The Underlay Reference definition is much like a block definition but instead of containing geometry, the Underlay Reference definition contains information about the type of Underlay Reference and the path to the external file.

Attribute Name	Content
autocad_underlay_clipped	Indicates whether the underlay is clipped when viewed in the native application. Range: Yes | No
autocad_underlay_clip_inverted	Indicates whether the clipping is inverted when viewed in the native application. Range: Yes | No
autocad_underlay_contrast	The contrast of the underlay when viewed in the native application. Range: 0..100
autocad_underlay_fade	The transparency of the underlay when viewed in the native application. Range: 0..100
autocad_underlay_monochrome	Indicates whether the underlay is monochrome when viewed in the native application. Range: 0..100
autocad_underlay_adjusted_for_background	Indicates whether the underlay will have its colors adjusted to be visible against the background when viewed in the native application. Range: Yes | No
autocad_underlay_on	Indicates whether the underlay will be enabled or not when viewed in the native application. Range: Yes | No
autocad_underlay_definition_id	The ID for the underlay definition, this can be used to group Underlay References that have the same definition. Range: char[50]
autocad_underlay_source_file_name	The path to the external file that will be used as the underlay. Range: char[65]
autocad_underlay_item_name	The name of the item being displayed by the underlay. Range: char[65]
autocad_underlay_type	The type of the underlay based on the file type. Range: Pdf | Dwf | Dgn