Method addSubOptions

src/webpage/settings.ts:2010–2015

(name: string, {ltr = false, noSubmit = false} = {})

			return jsonRes;
		} else {
			return new Promise<boolean>((resolution) => {
				const better = new Dialog("");
				const form = better.options.addForm(
					"",
					(res: any) => {
						if (res.message) {
							throw new FormError(ti, res.message);
						} else {
							resolution(res);