diff --git a/index.d.ts b/index.d.ts
index d54d4ab..62a4aea 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -4,11 +4,11 @@ export declare class Pass {
 	constructor(options: Schema.Instance);
 
 	public transitType: "PKTransitTypeAir" | "PKTransitTypeBoat" | "PKTransitTypeBus" | "PKTransitTypeGeneric" | "PKTransitTypeTrain";
-	public headerFields: FieldContainer;
-	public primaryFields: FieldContainer;
-	public secondaryFields: FieldContainer;
-	public auxiliaryFields: FieldContainer;
-	public backFields: FieldContainer;
+	public headerFields: Field[];
+	public primaryFields: Field[];
+	public secondaryFields: Field[];
+	public auxiliaryFields: (Field & { row: number })[];
+	public backFields: Field[];
 
 	/**
 	 * Generates a Stream of a zip file using the infos passed through overrides or methods.
@@ -67,11 +67,6 @@ export declare class Pass {
 	load(resource: string, name: string): this;
 }
 
-declare class FieldContainer {
-	push(...fields: Schema.Field[]): number;
-	pop(amount?: number): undefined | number;
-}
-
 interface BarcodeInterfaces extends BarcodeSuccessfulOperations {
 	autocomplete: () => void | BarcodeSuccessfulOperations
 }
@@ -91,73 +86,170 @@ declare namespace Schema {
 	type NumberStyle = "PKNumberStyleDecimal" | "PKNumberStylePercent" | "PKNumberStyleScientific" | "PKNumberStyleSpellOut";
 	type BarcodeFormat = "PKBarcodeFormatQR" | "PKBarcodeFormatPDF417" | "PKBarcodeFormatAztec" | "PKBarcodeFormatCode128";
 	type RelevanceType = "beacons" | "locations" | "maxDistance" | "relevantDate";
+	type SemanticsEventType = "PKEventTypeGeneric" | "PKEventTypeLivePerformance" | "PKEventTypeMovie" | "PKEventTypeSports" | "PKEventTypeConference" | "PKEventTypeConvention" | "PKEventTypeWorkshop" | "PKEventTypeSocialGathering";
 
 	interface Instance {
-		model: string,
+		model: string;
 		certificates: {
-			wwdr: string,
-			signerCert: string,
+			wwdr: string;
+			signerCert: string;
 			signerKey: {
-				keyFile: string,
-				passphrase: string
+				keyFile: string;
+				passphrase: string;
 			}
-		},
-		overrides: SupportedOptions,
-		shouldOverwrite?: boolean
+		};
+		overrides: SupportedOptions;
+		shouldOverwrite?: boolean;
 	}
 
 	interface SupportedOptions {
-		serialNumber?: string,
-		description?: string,
-		userInfo?: Object | any[],
-		webServiceURL?: string,
-		authenticationToken?: string,
-		backgroundColor?: string,
-		foregroundColor?: string,
-		labelColor?: string,
-		groupingIdentifier?: string,
-		suppressStripShine?: boolean
+		serialNumber?: string;
+		description?: string;
+		userInfo?: Object | any[];
+		webServiceURL?: string;
+		authenticationToken?: string;
+		backgroundColor?: string;
+		foregroundColor?: string;
+		labelColor?: string;
+		groupingIdentifier?: string;
+		suppressStripShine?: boolean;
 	}
 
 	interface Field {
-		attributedValue?: string,
-		changeMessage?: string,
-		dataDetectorType?: DataDetectorType[],
-		label?: string,
-		textAlignment?: TextAlignment,
-		key: string,
-		value: string | number,
-		dateStyle?: DateTimeStyle,
-		ignoreTimeZone?: boolean,
-		isRelative?: boolean,
-		timeStyle?: DateTimeStyle,
-		currencyCode?: string,
-		numberStyle?: NumberStyle
+		attributedValue?: string;
+		changeMessage?: string;
+		dataDetectorType?: DataDetectorType[];
+		label?: string;
+		textAlignment?: TextAlignment;
+		key: string;
+		value: string | number;
+		dateStyle?: DateTimeStyle;
+		ignoreTimeZone?: boolean;
+		isRelative?: boolean;
+		timeStyle?: DateTimeStyle;
+		currencyCode?: string;
+		numberStyle?: NumberStyle;
+		semantics?: Semantics;
 	}
 
 	interface Beacon {
-		major?: number,
-		minor?: number,
-		proximityUUID: string,
-		relevantText?: string
+		major?: number;
+		minor?: number;
+		proximityUUID: string;
+		relevantText?: string;
 	}
 
 	interface Location {
-		altitude?: number,
-		latitude: number,
-		longitude: number,
-		relevantText?: string
+		altitude?: number;
+		latitude: number;
+		longitude: number;
+		relevantText?: string;
 	}
 
 	interface NFC {
-		message: string,
-		encryptionPublicKey?: string
+		message: string;
+		encryptionPublicKey?: string;
 	}
 
 	interface Barcode {
-		altText?: string,
-		messageEncoding?: string,
-		format: BarcodeFormat,
-		message: string
+		altText?: string;
+		messageEncoding?: string;
+		format: BarcodeFormat;
+		message: string;
+	}
+
+	interface Semantics {
+		// All
+		totalPrice?: SemanticsCurrencyAmount;
+		// boarding Passes and Events
+		duration?: number;
+		seats?: Seat[];
+		silenceRequested?: boolean;
+		// all boarding passes
+		departureLocation?: SemanticsLocation;
+		destinationLocation?: SemanticsLocation;
+		destinationLocationDescription?: SemanticsLocation;
+		transitProvider?: string;
+		vehicleName?: string;
+		vehicleType?: string;
+		originalDepartureDate?: string;
+		currentDepartureDate?: string;
+		originalArrivalDate?: string;
+		currentArrivalDate?: string;
+		originalBoardingDate?: string;
+		currentBoardingDate?: string;
+		boardingGroup?: string;
+		boardingSequenceNumber?: string;
+		confirmationNumber?: string;
+		transitStatus?: string;
+		transitStatuReason?: string;
+		passengetName?: SemanticsPersonNameComponents;
+		membershipProgramName?: string;
+		membershipProgramNumber?: string;
+		priorityStatus?: string;
+		securityScreening?: string;
+		// Airline Boarding Passes
+		flightCode?: string;
+		airlineCode?: string;
+		flightNumber?: number;
+		departureAirportCode?: string;
+		departureAirportName?: string;
+		destinationTerminal?: string;
+		destinationGate?: string;
+		// Train and Other Rail Boarding Passes
+		departurePlatform?: string;
+		departureStationName?: string;
+		destinationPlatform?: string;
+		destinationStationName?: string;
+		carNumber?: string;
+		// All Event Tickets
+		eventName?: string;
+		venueName?: string;
+		venueLocation?: SemanticsLocation;
+		venueEntrance?: string;
+		venuePhoneNumber?: string;
+		venueRoom?: string;
+		eventType?: SemanticsEventType;
+		eventStartDate?: string;
+		eventEndDate?: string;
+		artistIDs?: string;
+		performerNames?: string[];
+		genre?: string;
+		// Sport Event Tickets
+		leagueName?: string;
+		leagueAbbreviation?: string;
+		homeTeamLocation?: string;
+		homeTeamName?: string;
+		homeTeamAbbreviation?: string;
+		awayTeamLocation?: string;
+		awayTeamName?: string;
+		awayTeamAbbreviation?: string;
+		sportName?: string;
+		// Store Card Passes
+		balance?: SemanticsCurrencyAmount;
+	};
+
+	interface SemanticsCurrencyAmount {
+		currencyCode: string;
+		amount: string;
+	};
+
+	interface SemanticsPersonNameComponents {
+		givenName: string;
+		familyName: string;
+	}
+
+	interface SemanticsSeat {
+		seatSection?: string;
+		seatRow?: string;
+		seatNumber?: string;
+		seatIdentifier?: string;
+		seatType?: string;
+		seatDescription?: string;
+	}
+
+	interface SemanticsLocation {
+		latitude: number;
+		longitude: number;
 	}
 }