export declare enum ExternalMarkupType {
    arrow = "arrow",
    cloud = "cloud",
    ellipse = "ellipse",
    freehand = "freehand",
    freehand_highlight = "freehand_highlight",
    highlight = "highlight",
    line = "line",
    rect = "rect",
    stamp = "stamp",
    textbox = "textbox"
}
export declare enum ViewerControlTools {
    selection = "selection",
    pan = "pan"
}
export declare type ToolKey = ExternalMarkupType | ViewerControlTools;
