(/en-US/docs/Web/API/PresentationAvailability) Experimental 
  * [ ` PresentationConnection ` ](/en-US/docs/Web/API/PresentationConnection) Experimental 
  * [ ` PresentationConnectionAvailableEvent ` ](/en-US/docs/Web/API/PresentationConnectionAvailableEvent) Experimental 
  * [ ` PresentationConnectionCloseEvent ` ](/en-US/docs/Web/API/PresentationConnectionCloseEvent) Experimental 
  * [ ` PresentationConnectionList ` ](/en-US/docs/Web/API/PresentationConnectionList) Experimental 
  * [ ` PresentationReceiver ` ](/en-US/docs/Web/API/PresentationReceiver) Experimental 
  * [ ` PresentationRequest ` ](/en-US/docs/Web/API/PresentationRequest) Experimental 
  * [ ` ProcessingInstruction ` ](/en-US/docs/Web/API/ProcessingInstruction)
  * [ ` ProgressEvent ` ](/en-US/docs/Web/API/ProgressEvent)
  * [ ` PromiseRejectionEvent ` ](/en-US/docs/Web/API/PromiseRejectionEvent)
  * [ ` PublicKeyCredential ` ](/en-US/docs/Web/API/PublicKeyCredential)
  * [ ` PushEvent ` ](/en-US/docs/Web/API/PushEvent)
  * [ ` PushManager ` ](/en-US/docs/Web/API/PushManager)
  * [ ` PushMessageData ` ](/en-US/docs/Web/API/PushMessageData)
  * [ ` PushSubscription ` ](/en-US/docs/Web/API/PushSubscription)
  * [ ` PushSubscriptionOptions ` ](/en-US/docs/Web/API/PushSubscriptionOptions)

###  R

  * [ ` RadioNodeList ` ](/en-US/docs/Web/API/RadioNodeList)
  * [ ` Range ` ](/en-US/docs/Web/API/Range)
  * [ ` ReadableByteStreamController ` ](/en-US/docs/Web/API/ReadableByteStreamController)
  * [ ` ReadableStream ` ](/en-US/docs/Web/API/ReadableStream)
  * [ ` ReadableStreamBYOBReader ` ](/en-US/docs/Web/API/ReadableStreamBYOBReader)
  * [ ` ReadableStreamBYOBRequest ` ](/en-US/docs/Web/API/ReadableStreamBYOBRequest)
  * [ ` ReadableStreamDefaultController ` ](/en-US/docs/Web/API/ReadableStreamDefaultController)
  * [ ` ReadableStreamDefaultReader ` ](/en-US/docs/Web/API/ReadableStreamDefaultReader)
  * [ ` RelativeOrientationSensor ` ](/en-US/docs/Web/API/RelativeOrientationSensor)
  * [ ` RemotePlayback ` ](/en-US/docs/Web/API/RemotePlayback)
  * [ ` Report ` ](/en-US/docs/Web/API/Report)
  * [ ` ReportBody ` ](/en-US/docs/Web/API/ReportBody)
  * [ ` ReportingObserver ` ](/en-US/docs/Web/API/ReportingObserver)
  * [ ` Request ` ](/en-US/docs/Web/API/Request)
  * [ ` ResizeObserver ` ](/en-US/docs/Web/API/ResizeObserver)
  * [ ` ResizeObserverEntry ` ](/en-US/docs/Web/API/ResizeObserverEntry)
  * [ ` ResizeObserverSize ` ](/en-US/docs/Web/API/ResizeObserverSize)
  * [ ` Response ` ](/en-US/docs/Web/API/Response)
  * [ ` RsaHashedImportParams ` ](/en-US/docs/Web/API/RsaHashedImportParams)
  * [ ` RsaHashedKeyGenParams ` ](/en-US/docs/Web/API/RsaHashedKeyGenParams)
  * [ ` RsaOaepParams ` ](/en-US/docs/Web/API/RsaOaepParams)
  * [ ` RsaPssParams ` ](/en-US/docs/Web/API/RsaPssParams)
  * [ ` RTCAudioSourceStats ` ](/en-US/docs/Web/API/RTCAudioSourceStats)
  * [ ` RTCCertificate ` ](/en-US/docs/Web/API/RTCCertificate)
  * [ ` RTCCertificateStats ` ](/en-US/docs/Web/API/RTCCertificateStats)
  * [ ` RTCCodecStats ` ](/en-US/docs/Web/API/RTCCodecStats)
  * [ ` RTCDataChannel ` ](/en-US/docs/Web/API/RTCDataChannel)
  * [ ` RTCDataChannelEvent ` ](/en-US/docs/Web/API/RTCDataChannelEvent)
  * [ ` RTCDtlsTransport ` ](/en-US/docs/Web/API/RTCDtlsTransport)
  * [ ` RTCDTMFSender ` ](/en-US/docs/Web/API/RTCDTMFSender)
  * [ ` RTCDTMFToneChangeEvent ` ](/en-US/docs/Web/API/RTCDTMFToneChangeEvent)
  * [ ` RTCEncodedAudioFrame ` ](/en-US/docs/Web/API/RTCEncodedAudioFrame)
  * [ ` RTCEncodedVideoFrame ` ](/en-US/docs/Web/API/RTCEncodedVideoFrame)
  * [ ` RTCError ` ](/en-US/docs/Web/API/RTCError)
  * [ ` RTCErrorEvent ` ](/en-US/docs/Web/API/RTCErrorEvent)
  * [ ` RTCIceCandidate ` ](/en-US/docs/Web/API/RTCIceCandidate)
  * [ ` RTCIceCandidatePair ` ](/en-US/docs/Web/API/RTCIceCandidatePair)
  * [ ` RTCIceCandidatePairStats ` ](/en-US/docs/Web/API/RTCIceCandidatePairStats)
  * [ ` RTCIceCandidateStats ` ](/en-US/docs/Web/API/RTCIceCandidateStats)
  * [ ` RTCIceParameters ` ](/