lil-gui/lil-gui.umd.js
/**
		 * Opens a GUI or folder. GUI and folders are open by default.
		 * @param {boolean} open Pass false to close
		 * @returns {this}
		 * @example
		 * gui.open(); // open
		 * gui.open( false ); // close
		 * gui.open( gui._closed ); // toggle
		 */
Opens a GUI or folder. GUI and folders are open by default.
Opens a GUI or folder . GUI and folders are open by default .
open( open = true ) {
			this._closed = !open;
			this.$title.setAttribute( 'aria-expanded', !this._closed );
			this.domElement.classList.toggle( 'closed', this._closed );
			return this;
		}
open ( open = true ) { this . _closed = ! open ; this . $title . setAttribute ( 'aria-expanded' , ! this . _closed ) ; this . domElement . classList . toggle ( 'closed' , this . _closed ) ; return this ; }
Opens a GUI or folder.
Opens a GUI or folder .