src/vs/workbench/contrib/terminal/browser/terminalInstance.ts/TerminalInstance/_setAriaLabel
class TerminalInstance:	private _setAriaLabel(xterm: XTermTerminal | undefined, terminalId: number, title: string | undefined): void {
		if (xterm && xterm.textarea) {
			let label: string;
			if (title && title.length > 0) {
				label = nls.localize('terminalTextBoxAriaLabelNumberAndTitle', "Terminal {0}, {1}", terminalId, title);
			} else {
				label = nls.localize('terminalTextBoxAriaLabel', "Terminal {0}", terminalId);
			}
			const navigateUpKeybinding = this._keybindingService.lookupKeybinding(TerminalCommandId.NavigationModeFocusPrevious)?.getLabel();
			const navigateDownKeybinding = this._keybindingService.lookupKeybinding(TerminalCommandId.NavigationModeFocusNext)?.getLabel();
			if (navigateUpKeybinding && navigateDownKeybinding) {
				label += `\n${nls.localize('terminalNavigationMode', "Use {0} and {1} to navigate the terminal buffer", navigateUpKeybinding, navigateDownKeybinding)}`;
			}
			xterm.textarea.setAttribute('aria-label', label);
		}
	}