ArcObjects Component Help  (Core)    

IMask Interface

Provides access to members that control the symbol mask.

Members

Description
Read/write property MaskSize The mask size.
Read/write property MaskStyle The mask style.
Read/write property MaskSymbol The mask symbol.

CoClasses that implement IMask

CoClasses and Classes Description
MultiLayerMarkerSymbol MultiLayer Marker Symbol.
TextSymbol Text Symbol.