ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Desktop.Editing Namespace / AnnotationProperties Class / SmallCaps Property

SmallCaps Property (AnnotationProperties)
Gets and sets whether the annotation should be drawn as Small Capitals; where lower case is converted to small caps and upper case text is left as upper case.
Syntax
public Nullable<bool> SmallCaps {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.2 or higher.
See Also