ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMHatchFill Class / Separation Property

Separation Property
Gets or sets the distance between the line symbols in the hatch pattern.
Syntax
public double Separation {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also