| displayName | The name to display in menus. |
| componentToolTarget | The type this tool can edit. Set to null if the tool is not a Component tool. |
| editorToolContext | The EditorToolContext type that this tool relates to. When an EditorTool defines an editorToolContext scope, the tool is not shown in menus and must be activated by the EditorToolContext.ResolveTool method. |
| toolPriority | The order to display tools in the Tools overlay in. Refer to ToolAttribute.toolPriority. |
| variantGroup | The tool variant group to assign the tool to in the Tools overlay. Tool variants are used to group similar tools into a single button in the Tools overlay. Refer to ToolAttribute.variantGroup. |
| variantPriority | The variant priority defines the order that tools are displayed in when they are displayed in a ToolAttribute.variantGroup dropdown. |
Registers an EditorTool as either a Global tool or a CustomEditor tool.
A Global tool is always available in the toolbar menu. A CustomEditor tool is only available when the current selection contains a matching target type.