API Reference > frontend-devTools > Tools > MaskBackgroundMapByExcludedElementTool > toolId toolId Static toolId: string = "MaskBackgroundMapByExcludedElement" The unique string that identifies this tool. This must be overridden in every subclass. Defined in frontend-devtools/src/tools/PlanarMaskTools.ts Line 229 Last Updated: 20 June, 2023