src/vs/editor/browser/viewParts/selections/selections.ts/SelectionsOverlay/_createSelectionPiece
class SelectionsOverlay:	private _createSelectionPiece(top: number, height: string, className: string, left: number, width: number): string {
		return (
			'<div class="cslr '
			+ className
			+ '" style="top:'
			+ top.toString()
			+ 'px;left:'
			+ left.toString()
			+ 'px;width:'
			+ width.toString()
			+ 'px;height:'
			+ height
			+ 'px;"></div>'
		);
	}