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---
title: Enum values
layout: base
---
<p>Strings used as enumeration values:</p>
<ul class=long>
<li><code id='x-'>""</code>
<ul>
<li><a href="https://fetch.spec.whatwg.org/">Fetch Standard</a> in enum <code><a href="names/RequestDestination.html">RequestDestination</a></code></li>
<li><a href="https://html.spec.whatwg.org/multipage/">HTML Standard</a> in enum <code><a href="names/CanPlayTypeResult.html">CanPlayTypeResult</a></code></li>
<li><a href="https://w3c.github.io/gamepad/extensions.html">Gamepad Extensions</a> in enum <code><a href="names/GamepadHand.html">GamepadHand</a></code></li>
<li><a href="https://wicg.github.io/background-fetch/">Background Fetch</a> in enum <code><a href="names/BackgroundFetchResult.html">BackgroundFetchResult</a></code></li>
<li><a href="https://wicg.github.io/background-fetch/">Background Fetch</a> in enum <code><a href="names/BackgroundFetchFailureReason.html">BackgroundFetchFailureReason</a></code></li>
<li><a href="https://wicg.github.io/content-index/spec/">Content Index</a> in enum <code><a href="names/ContentCategory.html">ContentCategory</a></code></li>
<li><a href="https://www.w3.org/TR/gamepad/">Gamepad</a> in enum <code><a href="names/GamepadMappingType.html">GamepadMappingType</a></code></li>
<li><a href="https://www.w3.org/TR/referrer-policy/">Referrer Policy</a> in enum <code><a href="names/ReferrerPolicy.html">ReferrerPolicy</a></code></li>
<li><a href="https://www.w3.org/TR/webvtt1/">WebVTT: The Web Video Text Tracks Format</a> in enum <code><a href="names/DirectionSetting.html">DirectionSetting</a></code></li>
<li><a href="https://www.w3.org/TR/webvtt1/">WebVTT: The Web Video Text Tracks Format</a> in enum <code><a href="names/ScrollSetting.html">ScrollSetting</a></code></li>
<li><a href="https://xhr.spec.whatwg.org/">XMLHttpRequest Standard</a> in enum <code><a href="names/XMLHttpRequestResponseType.html">XMLHttpRequestResponseType</a></code></li>
</ul></li>
<li><code id='x-1'>"1"</code>
<ul>
<li><a href="https://wicg.github.io/trust-token-api/">Private State Token API</a> in enum <code><a href="names/TokenVersion.html">TokenVersion</a></code></li>
</ul></li>
<li><code id='x-1d'>"1d"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureDimension.html">GPUTextureDimension</a></code></li>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureViewDimension.html">GPUTextureViewDimension</a></code></li>
</ul></li>
<li><code id='x-2d'>"2d"</code>
<ul>
<li><a href="https://html.spec.whatwg.org/multipage/">HTML Standard</a> in enum <code><a href="names/OffscreenRenderingContextId.html">OffscreenRenderingContextId</a></code></li>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureDimension.html">GPUTextureDimension</a></code></li>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureViewDimension.html">GPUTextureViewDimension</a></code></li>
</ul></li>
<li><code id='x-2d-array'>"2d-array"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureViewDimension.html">GPUTextureViewDimension</a></code></li>
</ul></li>
<li><code id='x-2g'>"2g"</code>
<ul>
<li><a href="https://wicg.github.io/netinfo/">Network Information API</a> in enum <code><a href="names/EffectiveConnectionType.html">EffectiveConnectionType</a></code></li>
</ul></li>
<li><code id='x-2x'>"2x"</code>
<ul>
<li><a href="https://www.w3.org/TR/webaudio-1.1/">Web Audio API 1.1</a> in enum <code><a href="names/OverSampleType.html">OverSampleType</a></code></li>
</ul></li>
<li><code id='x-3d'>"3d"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureDimension.html">GPUTextureDimension</a></code></li>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureViewDimension.html">GPUTextureViewDimension</a></code></li>
</ul></li>
<li><code id='x-3g'>"3g"</code>
<ul>
<li><a href="https://wicg.github.io/netinfo/">Network Information API</a> in enum <code><a href="names/EffectiveConnectionType.html">EffectiveConnectionType</a></code></li>
</ul></li>
<li><code id='x-4g'>"4g"</code>
<ul>
<li><a href="https://wicg.github.io/netinfo/">Network Information API</a> in enum <code><a href="names/EffectiveConnectionType.html">EffectiveConnectionType</a></code></li>
</ul></li>
<li><code id='x-4x'>"4x"</code>
<ul>
<li><a href="https://www.w3.org/TR/webaudio-1.1/">Web Audio API 1.1</a> in enum <code><a href="names/OverSampleType.html">OverSampleType</a></code></li>
</ul></li>
<li><code id='x-@always'>"@always"</code>
<ul>
<li><a href="https://www.w3.org/TR/json-ld11-framing/">JSON-LD 1.1 Framing</a> in enum <code><a href="names/JsonLdEmbed.html">JsonLdEmbed</a></code></li>
</ul></li>
<li><code id='x-@never'>"@never"</code>
<ul>
<li><a href="https://www.w3.org/TR/json-ld11-framing/">JSON-LD 1.1 Framing</a> in enum <code><a href="names/JsonLdEmbed.html">JsonLdEmbed</a></code></li>
</ul></li>
<li><code id='x-@once'>"@once"</code>
<ul>
<li><a href="https://www.w3.org/TR/json-ld11-framing/">JSON-LD 1.1 Framing</a> in enum <code><a href="names/JsonLdEmbed.html">JsonLdEmbed</a></code></li>
</ul></li>
<li><code id='x-BGRA'>"BGRA"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoPixelFormat.html">VideoPixelFormat</a></code></li>
</ul></li>
<li><code id='x-BGRX'>"BGRX"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoPixelFormat.html">VideoPixelFormat</a></code></li>
</ul></li>
<li><code id='x-HRTF'>"HRTF"</code>
<ul>
<li><a href="https://www.w3.org/TR/webaudio-1.1/">Web Audio API 1.1</a> in enum <code><a href="names/PanningModelType.html">PanningModelType</a></code></li>
</ul></li>
<li><code id='x-I420'>"I420"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoPixelFormat.html">VideoPixelFormat</a></code></li>
</ul></li>
<li><code id='x-I420A'>"I420A"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoPixelFormat.html">VideoPixelFormat</a></code></li>
</ul></li>
<li><code id='x-I420AP10'>"I420AP10"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoPixelFormat.html">VideoPixelFormat</a></code></li>
</ul></li>
<li><code id='x-I420AP12'>"I420AP12"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoPixelFormat.html">VideoPixelFormat</a></code></li>
</ul></li>
<li><code id='x-I420P10'>"I420P10"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoPixelFormat.html">VideoPixelFormat</a></code></li>
</ul></li>
<li><code id='x-I420P12'>"I420P12"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoPixelFormat.html">VideoPixelFormat</a></code></li>
</ul></li>
<li><code id='x-I422'>"I422"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoPixelFormat.html">VideoPixelFormat</a></code></li>
</ul></li>
<li><code id='x-I422A'>"I422A"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoPixelFormat.html">VideoPixelFormat</a></code></li>
</ul></li>
<li><code id='x-I422AP10'>"I422AP10"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoPixelFormat.html">VideoPixelFormat</a></code></li>
</ul></li>
<li><code id='x-I422AP12'>"I422AP12"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoPixelFormat.html">VideoPixelFormat</a></code></li>
</ul></li>
<li><code id='x-I422P10'>"I422P10"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoPixelFormat.html">VideoPixelFormat</a></code></li>
</ul></li>
<li><code id='x-I422P12'>"I422P12"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoPixelFormat.html">VideoPixelFormat</a></code></li>
</ul></li>
<li><code id='x-I444'>"I444"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoPixelFormat.html">VideoPixelFormat</a></code></li>
</ul></li>
<li><code id='x-I444A'>"I444A"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoPixelFormat.html">VideoPixelFormat</a></code></li>
</ul></li>
<li><code id='x-I444AP10'>"I444AP10"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoPixelFormat.html">VideoPixelFormat</a></code></li>
</ul></li>
<li><code id='x-I444AP12'>"I444AP12"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoPixelFormat.html">VideoPixelFormat</a></code></li>
</ul></li>
<li><code id='x-I444P10'>"I444P10"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoPixelFormat.html">VideoPixelFormat</a></code></li>
</ul></li>
<li><code id='x-I444P12'>"I444P12"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoPixelFormat.html">VideoPixelFormat</a></code></li>
</ul></li>
<li><code id='x-IRI confused with prefix'>"IRI confused with prefix"</code>
<ul>
<li><a href="https://www.w3.org/TR/json-ld11-api/">JSON-LD 1.1 Processing Algorithms and API</a> in enum <code><a href="names/JsonLdErrorCode.html">JsonLdErrorCode</a></code></li>
</ul></li>
<li><code id='x-NV12'>"NV12"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoPixelFormat.html">VideoPixelFormat</a></code></li>
</ul></li>
<li><code id='x-RGBA'>"RGBA"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoPixelFormat.html">VideoPixelFormat</a></code></li>
</ul></li>
<li><code id='x-RGBX'>"RGBX"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoPixelFormat.html">VideoPixelFormat</a></code></li>
</ul></li>
<li><code id='x-a-rate'>"a-rate"</code>
<ul>
<li><a href="https://www.w3.org/TR/webaudio-1.1/">Web Audio API 1.1</a> in enum <code><a href="names/AutomationRate.html">AutomationRate</a></code></li>
</ul></li>
<li><code id='x-aac'>"aac"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs-aac-codec-registration/">AAC WebCodecs Registration</a> in enum <code><a href="names/AacBitstreamFormat.html">AacBitstreamFormat</a></code></li>
</ul></li>
<li><code id='x-aborted'>"aborted"</code>
<ul>
<li><a href="https://webaudio.github.io/web-speech-api/">Web Speech API</a> in enum <code><a href="names/SpeechRecognitionErrorCode.html">SpeechRecognitionErrorCode</a></code></li>
<li><a href="https://wicg.github.io/background-fetch/">Background Fetch</a> in enum <code><a href="names/BackgroundFetchFailureReason.html">BackgroundFetchFailureReason</a></code></li>
</ul></li>
<li><code id='x-accepted'>"accepted"</code>
<ul>
<li><a href="https://wicg.github.io/manifest-incubations/">Manifest Incubations</a> in enum <code><a href="names/AppBannerPromptOutcome.html">AppBannerPromptOutcome</a></code></li>
</ul></li>
<li><code id='x-accumulate'>"accumulate"</code>
<ul>
<li><a href="https://www.w3.org/TR/web-animations-1/">Web Animations</a> in enum <code><a href="names/CompositeOperation.html">CompositeOperation</a></code></li>
<li><a href="https://www.w3.org/TR/web-animations-1/">Web Animations</a> in enum <code><a href="names/CompositeOperationOrAuto.html">CompositeOperationOrAuto</a></code></li>
<li><a href="https://www.w3.org/TR/web-animations-2/">Web Animations Level 2</a> in enum <code><a href="names/IterationCompositeOperation.html">IterationCompositeOperation</a></code></li>
</ul></li>
<li><code id='x-activated'>"activated"</code>
<ul>
<li><a href="https://www.w3.org/TR/service-workers/">Service Workers Nightly</a> in enum <code><a href="names/ServiceWorkerState.html">ServiceWorkerState</a></code></li>
</ul></li>
<li><code id='x-activating'>"activating"</code>
<ul>
<li><a href="https://www.w3.org/TR/service-workers/">Service Workers Nightly</a> in enum <code><a href="names/ServiceWorkerState.html">ServiceWorkerState</a></code></li>
</ul></li>
<li><code id='x-active'>"active"</code>
<ul>
<li><a href="https://wicg.github.io/idle-detection/">Idle Detection API</a> in enum <code><a href="names/UserIdleState.html">UserIdleState</a></code></li>
<li><a href="https://wicg.github.io/page-lifecycle/">Page Lifecycle</a> in enum <code><a href="names/ClientLifecycleState.html">ClientLifecycleState</a></code></li>
<li><a href="https://www.w3.org/TR/audio-session/">Audio Session</a> in enum <code><a href="names/AudioSessionState.html">AudioSessionState</a></code></li>
<li><a href="https://www.w3.org/TR/fedcm-1/">Federated Credential Management API</a> in enum <code><a href="names/IdentityCredentialRequestOptionsMode.html">IdentityCredentialRequestOptionsMode</a></code></li>
<li><a href="https://www.w3.org/TR/web-animations-1/">Web Animations</a> in enum <code><a href="names/AnimationReplaceState.html">AnimationReplaceState</a></code></li>
<li><a href="https://www.w3.org/TR/webrtc/">WebRTC: Real-Time Communication in Browsers</a> in enum <code><a href="names/RTCIceTcpCandidateType.html">RTCIceTcpCandidateType</a></code></li>
</ul></li>
<li><code id='x-add'>"add"</code>
<ul>
<li><a href="https://www.w3.org/TR/web-animations-1/">Web Animations</a> in enum <code><a href="names/CompositeOperation.html">CompositeOperation</a></code></li>
<li><a href="https://www.w3.org/TR/web-animations-1/">Web Animations</a> in enum <code><a href="names/CompositeOperationOrAuto.html">CompositeOperationOrAuto</a></code></li>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUBlendOperation.html">GPUBlendOperation</a></code></li>
</ul></li>
<li><code id='x-additive'>"additive"</code>
<ul>
<li><a href="https://www.w3.org/TR/webxr-ar-module-1/">WebXR Augmented Reality Module - Level 1</a> in enum <code><a href="names/XREnvironmentBlendMode.html">XREnvironmentBlendMode</a></code></li>
</ul></li>
<li><code id='x-address'>"address"</code>
<ul>
<li><a href="https://www.w3.org/TR/contact-picker/">Contact Picker API</a> in enum <code><a href="names/ContactProperty.html">ContactProperty</a></code></li>
</ul></li>
<li><code id='x-adts'>"adts"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs-aac-codec-registration/">AAC WebCodecs Registration</a> in enum <code><a href="names/AacBitstreamFormat.html">AacBitstreamFormat</a></code></li>
</ul></li>
<li><code id='x-after-transition'>"after-transition"</code>
<ul>
<li><a href="https://html.spec.whatwg.org/multipage/">HTML Standard</a> in enum <code><a href="names/NavigationFocusReset.html">NavigationFocusReset</a></code></li>
<li><a href="https://html.spec.whatwg.org/multipage/">HTML Standard</a> in enum <code><a href="names/NavigationScrollBehavior.html">NavigationScrollBehavior</a></code></li>
</ul></li>
<li><code id='x-all'>"all"</code>
<ul>
<li><a href="https://privacycg.github.io/saa-non-cookie-storage/">Extending Storage Access API (SAA) to non-cookie storage</a> in enum <code><a href="names/SameSiteCookiesType.html">SameSiteCookiesType</a></code></li>
<li><a href="https://www.w3.org/TR/css-nav-1/">CSS Spatial Navigation Level 1</a> in enum <code><a href="names/FocusableAreaSearchMode.html">FocusableAreaSearchMode</a></code></li>
<li><a href="https://www.w3.org/TR/cssom-view-1/">CSSOM View Module</a> in enum <code><a href="names/ScrollIntoViewContainer.html">ScrollIntoViewContainer</a></code></li>
<li><a href="https://www.w3.org/TR/service-workers/">Service Workers Nightly</a> in enum <code><a href="names/ServiceWorkerUpdateViaCache.html">ServiceWorkerUpdateViaCache</a></code></li>
<li><a href="https://www.w3.org/TR/service-workers/">Service Workers Nightly</a> in enum <code><a href="names/ClientType.html">ClientType</a></code></li>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureAspect.html">GPUTextureAspect</a></code></li>
<li><a href="https://www.w3.org/TR/webrtc/">WebRTC: Real-Time Communication in Browsers</a> in enum <code><a href="names/RTCIceTransportPolicy.html">RTCIceTransportPolicy</a></code></li>
</ul></li>
<li><code id='x-all-petite-caps'>"all-petite-caps"</code>
<ul>
<li><a href="https://html.spec.whatwg.org/multipage/">HTML Standard</a> in enum <code><a href="names/CanvasFontVariantCaps.html">CanvasFontVariantCaps</a></code></li>
</ul></li>
<li><code id='x-all-small-caps'>"all-small-caps"</code>
<ul>
<li><a href="https://html.spec.whatwg.org/multipage/">HTML Standard</a> in enum <code><a href="names/CanvasFontVariantCaps.html">CanvasFontVariantCaps</a></code></li>
</ul></li>
<li><code id='x-allowed'>"allowed"</code>
<ul>
<li><a href="https://www.w3.org/TR/autoplay-detection/">Autoplay Policy Detection</a> in enum <code><a href="names/AutoplayPolicy.html">AutoplayPolicy</a></code></li>
</ul></li>
<li><code id='x-allowed-muted'>"allowed-muted"</code>
<ul>
<li><a href="https://www.w3.org/TR/autoplay-detection/">Autoplay Policy Detection</a> in enum <code><a href="names/AutoplayPolicy.html">AutoplayPolicy</a></code></li>
</ul></li>
<li><code id='x-allpass'>"allpass"</code>
<ul>
<li><a href="https://www.w3.org/TR/webaudio-1.1/">Web Audio API 1.1</a> in enum <code><a href="names/BiquadFilterType.html">BiquadFilterType</a></code></li>
</ul></li>
<li><code id='x-alpha-blend'>"alpha-blend"</code>
<ul>
<li><a href="https://www.w3.org/TR/webxr-ar-module-1/">WebXR Augmented Reality Module - Level 1</a> in enum <code><a href="names/XREnvironmentBlendMode.html">XREnvironmentBlendMode</a></code></li>
</ul></li>
<li><code id='x-alphabetic'>"alphabetic"</code>
<ul>
<li><a href="https://html.spec.whatwg.org/multipage/">HTML Standard</a> in enum <code><a href="names/CanvasTextBaseline.html">CanvasTextBaseline</a></code></li>
</ul></li>
<li><code id='x-alternate'>"alternate"</code>
<ul>
<li><a href="https://www.w3.org/TR/web-animations-1/">Web Animations</a> in enum <code><a href="names/PlaybackDirection.html">PlaybackDirection</a></code></li>
<li><a href="https://www.w3.org/TR/web-animations-2/">Web Animations Level 2</a> in enum <code><a href="names/AnimationTriggerType.html">AnimationTriggerType</a></code></li>
</ul></li>
<li><code id='x-alternate-reverse'>"alternate-reverse"</code>
<ul>
<li><a href="https://www.w3.org/TR/web-animations-1/">Web Animations</a> in enum <code><a href="names/PlaybackDirection.html">PlaybackDirection</a></code></li>
</ul></li>
<li><code id='x-always'>"always"</code>
<ul>
<li><a href="https://www.w3.org/TR/image-capture/">MediaStream Image Capture</a> in enum <code><a href="names/RedEyeReduction.html">RedEyeReduction</a></code></li>
<li><a href="https://www.w3.org/TR/screen-capture/">Screen Capture</a> in enum <code><a href="names/CursorCaptureConstraint.html">CursorCaptureConstraint</a></code></li>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUCompareFunction.html">GPUCompareFunction</a></code></li>
</ul></li>
<li><code id='x-ambient'>"ambient"</code>
<ul>
<li><a href="https://www.w3.org/TR/audio-session/">Audio Session</a> in enum <code><a href="names/AudioSessionType.html">AudioSessionType</a></code></li>
</ul></li>
<li><code id='x-ancestor'>"ancestor"</code>
<ul>
<li><a href="https://w3c.github.io/long-animation-frames/">Long Animation Frames API</a> in enum <code><a href="names/ScriptWindowAttribution.html">ScriptWindowAttribution</a></code></li>
</ul></li>
<li><code id='x-angle'>"angle"</code>
<ul>
<li><a href="https://www.w3.org/TR/css-typed-om-1/">CSS Typed OM Level 1</a> in enum <code><a href="names/CSSNumericBaseType.html">CSSNumericBaseType</a></code></li>
</ul></li>
<li><code id='x-annexb'>"annexb"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs-avc-codec-registration/">AVC (H.264) WebCodecs Registration</a> in enum <code><a href="names/AvcBitstreamFormat.html">AvcBitstreamFormat</a></code></li>
<li><a href="https://www.w3.org/TR/webcodecs-hevc-codec-registration/">HEVC (H.265) WebCodecs Registration</a> in enum <code><a href="names/HevcBitstreamFormat.html">HevcBitstreamFormat</a></code></li>
</ul></li>
<li><code id='x-answer'>"answer"</code>
<ul>
<li><a href="https://www.w3.org/TR/webrtc/">WebRTC: Real-Time Communication in Browsers</a> in enum <code><a href="names/RTCSdpType.html">RTCSdpType</a></code></li>
</ul></li>
<li><code id='x-any'>"any"</code>
<ul>
<li><a href="https://www.w3.org/TR/screen-orientation/">Screen Orientation</a> in enum <code><a href="names/OrientationLockType.html">OrientationLockType</a></code></li>
</ul></li>
<li><code id='x-anyfunc'>"anyfunc"</code>
<ul>
<li><a href="https://www.w3.org/TR/wasm-js-api-2/">WebAssembly JavaScript Interface</a> in enum <code><a href="names/TableKind.html">TableKind</a></code></li>
<li><a href="https://www.w3.org/TR/wasm-js-api-2/">WebAssembly JavaScript Interface</a> in enum <code><a href="names/ValueType.html">ValueType</a></code></li>
</ul></li>
<li><code id='x-application/xhtml+xml'>"application/xhtml+xml"</code>
<ul>
<li><a href="https://html.spec.whatwg.org/multipage/">HTML Standard</a> in enum <code><a href="names/DOMParserSupportedType.html">DOMParserSupportedType</a></code></li>
</ul></li>
<li><code id='x-application/xml'>"application/xml"</code>
<ul>
<li><a href="https://html.spec.whatwg.org/multipage/">HTML Standard</a> in enum <code><a href="names/DOMParserSupportedType.html">DOMParserSupportedType</a></code></li>
</ul></li>
<li><code id='x-arraybuffer'>"arraybuffer"</code>
<ul>
<li><a href="https://websockets.spec.whatwg.org/">WebSockets Standard</a> in enum <code><a href="names/BinaryType.html">BinaryType</a></code></li>
<li><a href="https://xhr.spec.whatwg.org/">XMLHttpRequest Standard</a> in enum <code><a href="names/XMLHttpRequestResponseType.html">XMLHttpRequestResponseType</a></code></li>
</ul></li>
<li><code id='x-article'>"article"</code>
<ul>
<li><a href="https://wicg.github.io/content-index/spec/">Content Index</a> in enum <code><a href="names/ContentCategory.html">ContentCategory</a></code></li>
</ul></li>
<li><code id='x-astc-10x10-unorm'>"astc-10x10-unorm"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-10x10-unorm-srgb'>"astc-10x10-unorm-srgb"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-10x5-unorm'>"astc-10x5-unorm"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-10x5-unorm-srgb'>"astc-10x5-unorm-srgb"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-10x6-unorm'>"astc-10x6-unorm"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-10x6-unorm-srgb'>"astc-10x6-unorm-srgb"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-10x8-unorm'>"astc-10x8-unorm"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-10x8-unorm-srgb'>"astc-10x8-unorm-srgb"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-12x10-unorm'>"astc-12x10-unorm"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-12x10-unorm-srgb'>"astc-12x10-unorm-srgb"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-12x12-unorm'>"astc-12x12-unorm"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-12x12-unorm-srgb'>"astc-12x12-unorm-srgb"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-4x4-unorm'>"astc-4x4-unorm"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-4x4-unorm-srgb'>"astc-4x4-unorm-srgb"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-5x4-unorm'>"astc-5x4-unorm"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-5x4-unorm-srgb'>"astc-5x4-unorm-srgb"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-5x5-unorm'>"astc-5x5-unorm"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-5x5-unorm-srgb'>"astc-5x5-unorm-srgb"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-6x5-unorm'>"astc-6x5-unorm"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-6x5-unorm-srgb'>"astc-6x5-unorm-srgb"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-6x6-unorm'>"astc-6x6-unorm"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-6x6-unorm-srgb'>"astc-6x6-unorm-srgb"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-8x5-unorm'>"astc-8x5-unorm"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-8x5-unorm-srgb'>"astc-8x5-unorm-srgb"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-8x6-unorm'>"astc-8x6-unorm"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-8x6-unorm-srgb'>"astc-8x6-unorm-srgb"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-8x8-unorm'>"astc-8x8-unorm"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-astc-8x8-unorm-srgb'>"astc-8x8-unorm-srgb"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-attachment'>"attachment"</code>
<ul>
<li><a href="https://www.w3.org/TR/clipboard-apis/">Clipboard API and events</a> in enum <code><a href="names/PresentationStyle.html">PresentationStyle</a></code></li>
</ul></li>
<li><code id='x-audio'>"audio"</code>
<ul>
<li><a href="https://fetch.spec.whatwg.org/">Fetch Standard</a> in enum <code><a href="names/RequestDestination.html">RequestDestination</a></code></li>
<li><a href="https://wicg.github.io/content-index/spec/">Content Index</a> in enum <code><a href="names/ContentCategory.html">ContentCategory</a></code></li>
<li><a href="https://www.w3.org/TR/webcodecs-opus-codec-registration/">Opus WebCodecs Registration</a> in enum <code><a href="names/OpusApplication.html">OpusApplication</a></code></li>
</ul></li>
<li><code id='x-audio-busy'>"audio-busy"</code>
<ul>
<li><a href="https://webaudio.github.io/web-speech-api/">Web Speech API</a> in enum <code><a href="names/SpeechSynthesisErrorCode.html">SpeechSynthesisErrorCode</a></code></li>
</ul></li>
<li><code id='x-audio-capture'>"audio-capture"</code>
<ul>
<li><a href="https://webaudio.github.io/web-speech-api/">Web Speech API</a> in enum <code><a href="names/SpeechRecognitionErrorCode.html">SpeechRecognitionErrorCode</a></code></li>
</ul></li>
<li><code id='x-audio-hardware'>"audio-hardware"</code>
<ul>
<li><a href="https://webaudio.github.io/web-speech-api/">Web Speech API</a> in enum <code><a href="names/SpeechSynthesisErrorCode.html">SpeechSynthesisErrorCode</a></code></li>
</ul></li>
<li><code id='x-audiocontext'>"audiocontext"</code>
<ul>
<li><a href="https://www.w3.org/TR/autoplay-detection/">Autoplay Policy Detection</a> in enum <code><a href="names/AutoplayPolicyMediaType.html">AutoplayPolicyMediaType</a></code></li>
</ul></li>
<li><code id='x-audioinput'>"audioinput"</code>
<ul>
<li><a href="https://www.w3.org/TR/mediacapture-streams/">Media Capture and Streams</a> in enum <code><a href="names/MediaDeviceKind.html">MediaDeviceKind</a></code></li>
</ul></li>
<li><code id='x-audiooutput'>"audiooutput"</code>
<ul>
<li><a href="https://www.w3.org/TR/mediacapture-streams/">Media Capture and Streams</a> in enum <code><a href="names/MediaDeviceKind.html">MediaDeviceKind</a></code></li>
</ul></li>
<li><code id='x-audioworklet'>"audioworklet"</code>
<ul>
<li><a href="https://fetch.spec.whatwg.org/">Fetch Standard</a> in enum <code><a href="names/RequestDestination.html">RequestDestination</a></code></li>
</ul></li>
<li><code id='x-auth'>"auth"</code>
<ul>
<li><a href="https://www.w3.org/TR/push-api/">Push API</a> in enum <code><a href="names/PushEncryptionKeyName.html">PushEncryptionKeyName</a></code></li>
</ul></li>
<li><code id='x-authentication'>"authentication"</code>
<ul>
<li><a href="https://www.w3.org/TR/webrtc-encoded-transform/">WebRTC Encoded Transform</a> in enum <code><a href="names/SFrameTransformErrorEventType.html">SFrameTransformErrorEventType</a></code></li>
</ul></li>
<li><code id='x-auto'>"auto"</code>
<ul>
<li><a href="https://fetch.spec.whatwg.org/">Fetch Standard</a> in enum <code><a href="names/RequestPriority.html">RequestPriority</a></code></li>
<li><a href="https://fullscreen.spec.whatwg.org/">Fullscreen API Standard</a> in enum <code><a href="names/FullscreenNavigationUI.html">FullscreenNavigationUI</a></code></li>
<li><a href="https://html.spec.whatwg.org/multipage/">HTML Standard</a> in enum <code><a href="names/CanvasFontKerning.html">CanvasFontKerning</a></code></li>
<li><a href="https://html.spec.whatwg.org/multipage/">HTML Standard</a> in enum <code><a href="names/CanvasTextRendering.html">CanvasTextRendering</a></code></li>
<li><a href="https://html.spec.whatwg.org/multipage/">HTML Standard</a> in enum <code><a href="names/ScrollRestoration.html">ScrollRestoration</a></code></li>
<li><a href="https://html.spec.whatwg.org/multipage/">HTML Standard</a> in enum <code><a href="names/NavigationHistoryBehavior.html">NavigationHistoryBehavior</a></code></li>
<li><a href="https://notifications.spec.whatwg.org/">Notifications API Standard</a> in enum <code><a href="names/NotificationDirection.html">NotificationDirection</a></code></li>
<li><a href="https://www.w3.org/TR/audio-session/">Audio Session</a> in enum <code><a href="names/AudioSessionType.html">AudioSessionType</a></code></li>
<li><a href="https://www.w3.org/TR/cssom-view-1/">CSSOM View Module</a> in enum <code><a href="names/ScrollBehavior.html">ScrollBehavior</a></code></li>
<li><a href="https://www.w3.org/TR/image-capture/">MediaStream Image Capture</a> in enum <code><a href="names/FillLightMode.html">FillLightMode</a></code></li>
<li><a href="https://www.w3.org/TR/web-animations-1/">Web Animations</a> in enum <code><a href="names/FillMode.html">FillMode</a></code></li>
<li><a href="https://www.w3.org/TR/web-animations-1/">Web Animations</a> in enum <code><a href="names/CompositeOperationOrAuto.html">CompositeOperationOrAuto</a></code></li>
<li><a href="https://www.w3.org/TR/webcodecs-opus-codec-registration/">Opus WebCodecs Registration</a> in enum <code><a href="names/OpusSignal.html">OpusSignal</a></code></li>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUAutoLayoutMode.html">GPUAutoLayoutMode</a></code></li>
<li><a href="https://www.w3.org/TR/webvtt1/">WebVTT: The Web Video Text Tracks Format</a> in enum <code><a href="names/AutoKeyword.html">AutoKeyword</a></code></li>
<li><a href="https://www.w3.org/TR/webvtt1/">WebVTT: The Web Video Text Tracks Format</a> in enum <code><a href="names/PositionAlignSetting.html">PositionAlignSetting</a></code></li>
</ul></li>
<li><code id='x-auxiliary'>"auxiliary"</code>
<ul>
<li><a href="https://www.w3.org/TR/service-workers/">Service Workers Nightly</a> in enum <code><a href="names/FrameType.html">FrameType</a></code></li>
</ul></li>
<li><code id='x-avc'>"avc"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs-avc-codec-registration/">AVC (H.264) WebCodecs Registration</a> in enum <code><a href="names/AvcBitstreamFormat.html">AvcBitstreamFormat</a></code></li>
</ul></li>
<li><code id='x-aztec'>"aztec"</code>
<ul>
<li><a href="https://wicg.github.io/shape-detection-api/">Accelerated Shape Detection in Images</a> in enum <code><a href="names/BarcodeFormat.html">BarcodeFormat</a></code></li>
</ul></li>
<li><code id='x-babble'>"babble"</code>
<ul>
<li><a href="https://wicg.github.io/webusb/">WebUSB API</a> in enum <code><a href="names/USBTransferStatus.html">USBTransferStatus</a></code></li>
</ul></li>
<li><code id='x-back'>"back"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUCullMode.html">GPUCullMode</a></code></li>
</ul></li>
<li><code id='x-back_forward'>"back_forward"</code>
<ul>
<li><a href="https://www.w3.org/TR/navigation-timing-2/">Navigation Timing Level 2</a> in enum <code><a href="names/NavigationTimingType.html">NavigationTimingType</a></code></li>
</ul></li>
<li><code id='x-background'>"background"</code>
<ul>
<li><a href="https://wicg.github.io/scheduling-apis/">Prioritized Task Scheduling</a> in enum <code><a href="names/TaskPriority.html">TaskPriority</a></code></li>
</ul></li>
<li><code id='x-backward'>"backward"</code>
<ul>
<li><a href="https://www.w3.org/TR/webnn/">Web Neural Network API</a> in enum <code><a href="names/MLRecurrentNetworkDirection.html">MLRecurrentNetworkDirection</a></code></li>
</ul></li>
<li><code id='x-backwards'>"backwards"</code>
<ul>
<li><a href="https://www.w3.org/TR/web-animations-1/">Web Animations</a> in enum <code><a href="names/FillMode.html">FillMode</a></code></li>
</ul></li>
<li><code id='x-bad-status'>"bad-status"</code>
<ul>
<li><a href="https://wicg.github.io/background-fetch/">Background Fetch</a> in enum <code><a href="names/BackgroundFetchFailureReason.html">BackgroundFetchFailureReason</a></code></li>
</ul></li>
<li><code id='x-balanced'>"balanced"</code>
<ul>
<li><a href="https://www.w3.org/TR/mst-content-hint/">MediaStreamTrack Content Hints</a> in enum <code><a href="names/RTCDegradationPreference.html">RTCDegradationPreference</a></code></li>
<li><a href="https://www.w3.org/TR/webaudio-1.1/">Web Audio API 1.1</a> in enum <code><a href="names/AudioContextLatencyCategory.html">AudioContextLatencyCategory</a></code></li>
<li><a href="https://www.w3.org/TR/webrtc/">WebRTC: Real-Time Communication in Browsers</a> in enum <code><a href="names/RTCBundlePolicy.html">RTCBundlePolicy</a></code></li>
</ul></li>
<li><code id='x-bandpass'>"bandpass"</code>
<ul>
<li><a href="https://www.w3.org/TR/webaudio-1.1/">Web Audio API 1.1</a> in enum <code><a href="names/BiquadFilterType.html">BiquadFilterType</a></code></li>
</ul></li>
<li><code id='x-bandwidth'>"bandwidth"</code>
<ul>
<li><a href="https://www.w3.org/TR/webrtc-stats/">Identifiers for WebRTC's Statistics API</a> in enum <code><a href="names/RTCQualityLimitationReason.html">RTCQualityLimitationReason</a></code></li>
</ul></li>
<li><code id='x-basic'>"basic"</code>
<ul>
<li><a href="https://fetch.spec.whatwg.org/">Fetch Standard</a> in enum <code><a href="names/ResponseType.html">ResponseType</a></code></li>
</ul></li>
<li><code id='x-bc1-rgba-unorm'>"bc1-rgba-unorm"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-bc1-rgba-unorm-srgb'>"bc1-rgba-unorm-srgb"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-bc2-rgba-unorm'>"bc2-rgba-unorm"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-bc2-rgba-unorm-srgb'>"bc2-rgba-unorm-srgb"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-bc3-rgba-unorm'>"bc3-rgba-unorm"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-bc3-rgba-unorm-srgb'>"bc3-rgba-unorm-srgb"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-bc4-r-snorm'>"bc4-r-snorm"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-bc4-r-unorm'>"bc4-r-unorm"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-bc5-rg-snorm'>"bc5-rg-snorm"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-bc5-rg-unorm'>"bc5-rg-unorm"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-bc6h-rgb-float'>"bc6h-rgb-float"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-bc6h-rgb-ufloat'>"bc6h-rgb-ufloat"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-bc7-rgba-unorm'>"bc7-rgba-unorm"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-bc7-rgba-unorm-srgb'>"bc7-rgba-unorm-srgb"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-belowThreshold'>"belowThreshold"</code>
<ul>
<li><a href="https://wicg.github.io/turtledove/">Protected Audience (formerly FLEDGE)</a> in enum <code><a href="names/KAnonStatus.html">KAnonStatus</a></code></li>
</ul></li>
<li><code id='x-bevel'>"bevel"</code>
<ul>
<li><a href="https://html.spec.whatwg.org/multipage/">HTML Standard</a> in enum <code><a href="names/CanvasLineJoin.html">CanvasLineJoin</a></code></li>
</ul></li>
<li><code id='x-bgra8unorm'>"bgra8unorm"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-bgra8unorm-srgb'>"bgra8unorm-srgb"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUTextureFormat.html">GPUTextureFormat</a></code></li>
</ul></li>
<li><code id='x-bgra8unorm-storage'>"bgra8unorm-storage"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUFeatureName.html">GPUFeatureName</a></code></li>
</ul></li>
<li><code id='x-bitmaprenderer'>"bitmaprenderer"</code>
<ul>
<li><a href="https://html.spec.whatwg.org/multipage/">HTML Standard</a> in enum <code><a href="names/OffscreenRenderingContextId.html">OffscreenRenderingContextId</a></code></li>
</ul></li>
<li><code id='x-ble'>"ble"</code>
<ul>
<li><a href="https://www.w3.org/TR/webauthn-3/">Web Authentication: An API for accessing Public Key Credentials - Level 3</a> in enum <code><a href="names/AuthenticatorTransport.html">AuthenticatorTransport</a></code></li>
</ul></li>
<li><code id='x-blob'>"blob"</code>
<ul>
<li><a href="https://websockets.spec.whatwg.org/">WebSockets Standard</a> in enum <code><a href="names/BinaryType.html">BinaryType</a></code></li>
<li><a href="https://xhr.spec.whatwg.org/">XMLHttpRequest Standard</a> in enum <code><a href="names/XMLHttpRequestResponseType.html">XMLHttpRequestResponseType</a></code></li>
</ul></li>
<li><code id='x-block'>"block"</code>
<ul>
<li><a href="https://www.w3.org/TR/css-layout-api-1/">CSS Layout API Level 1</a> in enum <code><a href="names/ChildDisplayType.html">ChildDisplayType</a></code></li>
<li><a href="https://www.w3.org/TR/scroll-animations-1/">Scroll-driven Animations</a> in enum <code><a href="names/ScrollAxis.html">ScrollAxis</a></code></li>
</ul></li>
<li><code id='x-block-like'>"block-like"</code>
<ul>
<li><a href="https://www.w3.org/TR/css-layout-api-1/">CSS Layout API Level 1</a> in enum <code><a href="names/LayoutSizingMode.html">LayoutSizingMode</a></code></li>
</ul></li>
<li><code id='x-blocking'>"blocking"</code>
<ul>
<li><a href="https://www.w3.org/TR/resource-timing/">Resource Timing</a> in enum <code><a href="names/RenderBlockingStatusType.html">RenderBlockingStatusType</a></code></li>
</ul></li>
<li><code id='x-bluetooth'>"bluetooth"</code>
<ul>
<li><a href="https://wicg.github.io/netinfo/">Network Information API</a> in enum <code><a href="names/ConnectionType.html">ConnectionType</a></code></li>
</ul></li>
<li><code id='x-border'>"border"</code>
<ul>
<li><a href="https://www.w3.org/TR/cssom-view-1/">CSSOM View Module</a> in enum <code><a href="names/CSSBoxType.html">CSSBoxType</a></code></li>
</ul></li>
<li><code id='x-border-box'>"border-box"</code>
<ul>
<li><a href="https://www.w3.org/TR/resize-observer-1/">Resize Observer</a> in enum <code><a href="names/ResizeObserverBoxOptions.html">ResizeObserverBoxOptions</a></code></li>
</ul></li>
<li><code id='x-both'>"both"</code>
<ul>
<li><a href="https://www.w3.org/TR/web-animations-1/">Web Animations</a> in enum <code><a href="names/FillMode.html">FillMode</a></code></li>
<li><a href="https://www.w3.org/TR/webnn/">Web Neural Network API</a> in enum <code><a href="names/MLRecurrentNetworkDirection.html">MLRecurrentNetworkDirection</a></code></li>
</ul></li>
<li><code id='x-bottom'>"bottom"</code>
<ul>
<li><a href="https://html.spec.whatwg.org/multipage/">HTML Standard</a> in enum <code><a href="names/CanvasTextBaseline.html">CanvasTextBaseline</a></code></li>
</ul></li>
<li><code id='x-bounded-floor'>"bounded-floor"</code>
<ul>
<li><a href="https://www.w3.org/TR/webxr/">WebXR Device API</a> in enum <code><a href="names/XRReferenceSpaceType.html">XRReferenceSpaceType</a></code></li>
</ul></li>
<li><code id='x-browser'>"browser"</code>
<ul>
<li><a href="https://www.w3.org/TR/screen-capture/">Screen Capture</a> in enum <code><a href="names/DisplayCaptureSurfaceType.html">DisplayCaptureSurfaceType</a></code></li>
</ul></li>
<li><code id='x-bt2020'>"bt2020"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoColorPrimaries.html">VideoColorPrimaries</a></code></li>
</ul></li>
<li><code id='x-bt2020-ncl'>"bt2020-ncl"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoMatrixCoefficients.html">VideoMatrixCoefficients</a></code></li>
</ul></li>
<li><code id='x-bt470bg'>"bt470bg"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoColorPrimaries.html">VideoColorPrimaries</a></code></li>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoMatrixCoefficients.html">VideoMatrixCoefficients</a></code></li>
</ul></li>
<li><code id='x-bt709'>"bt709"</code>
<ul>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoColorPrimaries.html">VideoColorPrimaries</a></code></li>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoTransferCharacteristics.html">VideoTransferCharacteristics</a></code></li>
<li><a href="https://www.w3.org/TR/webcodecs/">WebCodecs</a> in enum <code><a href="names/VideoMatrixCoefficients.html">VideoMatrixCoefficients</a></code></li>
</ul></li>
<li><code id='x-bulk'>"bulk"</code>
<ul>
<li><a href="https://wicg.github.io/webusb/">WebUSB API</a> in enum <code><a href="names/USBEndpointType.html">USBEndpointType</a></code></li>
</ul></li>
<li><code id='x-butt'>"butt"</code>
<ul>
<li><a href="https://html.spec.whatwg.org/multipage/">HTML Standard</a> in enum <code><a href="names/CanvasLineCap.html">CanvasLineCap</a></code></li>
</ul></li>
<li><code id='x-buyer'>"buyer"</code>
<ul>
<li><a href="https://wicg.github.io/fenced-frame/">Fenced Frame</a> in enum <code><a href="names/FenceReportingDestination.html">FenceReportingDestination</a></code></li>
</ul></li>
<li><code id='x-byob'>"byob"</code>
<ul>
<li><a href="https://streams.spec.whatwg.org/">Streams Standard</a> in enum <code><a href="names/ReadableStreamReaderMode.html">ReadableStreamReaderMode</a></code></li>
</ul></li>
<li><code id='x-bytes'>"bytes"</code>
<ul>
<li><a href="https://streams.spec.whatwg.org/">Streams Standard</a> in enum <code><a href="names/ReadableStreamType.html">ReadableStreamType</a></code></li>
</ul></li>
<li><code id='x-cache'>"cache"</code>
<ul>
<li><a href="https://www.w3.org/TR/service-workers/">Service Workers Nightly</a> in enum <code><a href="names/RouterSourceEnum.html">RouterSourceEnum</a></code></li>
</ul></li>
<li><code id='x-canceled'>"canceled"</code>
<ul>
<li><a href="https://webaudio.github.io/web-speech-api/">Web Speech API</a> in enum <code><a href="names/SpeechSynthesisErrorCode.html">SpeechSynthesisErrorCode</a></code></li>
</ul></li>
<li><code id='x-candidate-pair'>"candidate-pair"</code>
<ul>
<li><a href="https://www.w3.org/TR/webrtc-stats/">Identifiers for WebRTC's Statistics API</a> in enum <code><a href="names/RTCStatsType.html">RTCStatsType</a></code></li>
</ul></li>
<li><code id='x-captions'>"captions"</code>
<ul>
<li><a href="https://html.spec.whatwg.org/multipage/">HTML Standard</a> in enum <code><a href="names/TextTrackKind.html">TextTrackKind</a></code></li>
</ul></li>
<li><code id='x-ccw'>"ccw"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUFrontFace.html">GPUFrontFace</a></code></li>
</ul></li>
<li><code id='x-ceil'>"ceil"</code>
<ul>
<li><a href="https://www.w3.org/TR/webnn/">Web Neural Network API</a> in enum <code><a href="names/MLRoundingType.html">MLRoundingType</a></code></li>
</ul></li>
<li><code id='x-cellular'>"cellular"</code>
<ul>
<li><a href="https://wicg.github.io/netinfo/">Network Information API</a> in enum <code><a href="names/ConnectionType.html">ConnectionType</a></code></li>
</ul></li>
<li><code id='x-center'>"center"</code>
<ul>
<li><a href="https://html.spec.whatwg.org/multipage/">HTML Standard</a> in enum <code><a href="names/CanvasTextAlign.html">CanvasTextAlign</a></code></li>
<li><a href="https://www.w3.org/TR/cssom-view-1/">CSSOM View Module</a> in enum <code><a href="names/ScrollLogicalPosition.html">ScrollLogicalPosition</a></code></li>
<li><a href="https://www.w3.org/TR/webvtt1/">WebVTT: The Web Video Text Tracks Format</a> in enum <code><a href="names/LineAlignSetting.html">LineAlignSetting</a></code></li>
<li><a href="https://www.w3.org/TR/webvtt1/">WebVTT: The Web Video Text Tracks Format</a> in enum <code><a href="names/PositionAlignSetting.html">PositionAlignSetting</a></code></li>
<li><a href="https://www.w3.org/TR/webvtt1/">WebVTT: The Web Video Text Tracks Format</a> in enum <code><a href="names/AlignSetting.html">AlignSetting</a></code></li>
</ul></li>
<li><code id='x-certificate'>"certificate"</code>
<ul>
<li><a href="https://www.w3.org/TR/webrtc-stats/">Identifiers for WebRTC's Statistics API</a> in enum <code><a href="names/RTCStatsType.html">RTCStatsType</a></code></li>
</ul></li>
<li><code id='x-chapters'>"chapters"</code>
<ul>
<li><a href="https://html.spec.whatwg.org/multipage/">HTML Standard</a> in enum <code><a href="names/TextTrackKind.html">TextTrackKind</a></code></li>
</ul></li>
<li><code id='x-checking'>"checking"</code>
<ul>
<li><a href="https://www.w3.org/TR/webrtc/">WebRTC: Real-Time Communication in Browsers</a> in enum <code><a href="names/RTCIceConnectionState.html">RTCIceConnectionState</a></code></li>
<li><a href="https://www.w3.org/TR/webrtc/">WebRTC: Real-Time Communication in Browsers</a> in enum <code><a href="names/RTCIceTransportState.html">RTCIceTransportState</a></code></li>
</ul></li>
<li><code id='x-clamp'>"clamp"</code>
<ul>
<li><a href="https://www.w3.org/TR/css-typed-om-1/">CSS Typed OM Level 1</a> in enum <code><a href="names/CSSMathOperator.html">CSSMathOperator</a></code></li>
</ul></li>
<li><code id='x-clamp-to-edge'>"clamp-to-edge"</code>
<ul>
<li><a href="https://www.w3.org/TR/webgpu/">WebGPU</a> in enum <code><a href="names/GPUAddressMode.html">GPUAddressMode</a></code></li>
</ul></li>
<li><code id='x-clamped-max'>"clamped-max"</code>
<ul>
<li><a href="https://www.w3.org/TR/webaudio-1.1/">Web Audio API 1.1</a> in enum <code><a href="names/ChannelCountMode.html">ChannelCountMode</a></code></li>
</ul></li>
<li><code id='x-class'>"class"</code>
<ul>
<li><a href="https://wicg.github.io/webusb/">WebUSB API</a> in enum <code><a href="names/USBRequestType.html">USBRequestType</a></code></li>
</ul></li>
<li><code id='x-classic'>"classic"</code>
<ul>
<li><a href="https://html.spec.whatwg.org/multipage/">HTML Standard</a> in enum <code><a href="names/WorkerType.html">WorkerType</a></code></li>
</ul></li>