📦 Release @webref/css6@6.25.13

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📦 Latest released @webref/css6 package was v6.25.11. Merging this pull request will release v6.25.13. Make sure that the bump is the right one for the changes.

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🛈 The actual change introduced by this pull request is a version bump in packages/css6/package.json. You do not need to review that change. The bumped version is not the version that will be released when this pull request is merged, but rather the version that will be released next time.

diff --ignore-trailing-space '--exclude=package.json' '--exclude=README.md' '--exclude=CHANGELOG.md' '--unified=3' webref/node_modules/@webref/css/css-animations-2.json packages/css6/css-animations-2.json
--- webref/node_modules/@webref/css/css-animations-2.json
+++ packages/css6/css-animations-2.json
@@ -37,6 +37,67 @@
       ]
     },
     {
+      "name": "animation-delay-start",
+      "href": "https://drafts.csswg.org/css-animations-2/#propdef-animation-delay-start",
+      "value": "<time>#",
+      "initial": "0s",
+      "appliesTo": "all elements",
+      "inherited": "no",
+      "percentages": "N/A",
+      "computedValue": "list, each item a duration",
+      "canonicalOrder": "per grammar",
+      "animationType": "not animatable",
+      "values": [
+        {
+          "name": "<time>",
+          "prose": "The <time> defines how long of a delay there is between the start of the animation (when the animation is applied to the element via these properties) and when it begins executing. A delay of 0s (the initial value) means that the animation will execute as soon as it is applied. A negative delay is valid. Similar to a delay of 0s, it means that the animation executes immediately, but is automatically progressed by the absolute value of the delay, as if the animation had started the specified time in the past, and so it appears to start partway through its active duration. If an animation’s keyframes have an implied starting value, the values are taken from the time the animation starts, not some time in the past.",
+          "href": "https://drafts.csswg.org/css-animations-2/#valdef-animation-delay-start-time",
+          "type": "value",
+          "value": "<time>"
+        }
+      ],
+      "styleDeclaration": [
+        "animation-delay-start",
+        "animationDelayStart"
+      ]
+    },
+    {
+      "name": "animation-delay-end",
+      "href": "https://drafts.csswg.org/css-animations-2/#propdef-animation-delay-end",
+      "value": "<time [0s,∞]>#",
+      "initial": "0s",
+      "appliesTo": "all elements",
+      "inherited": "no",
+      "percentages": "N/A",
+      "computedValue": "list, each item a duration",
+      "canonicalOrder": "per grammar",
+      "animationType": "not animatable",
+      "styleDeclaration": [
+        "animation-delay-end",
+        "animationDelayEnd"
+      ]
+    },
+    {
+      "name": "animation-delay",
+      "href": "https://drafts.csswg.org/css-animations-2/#propdef-animation-delay",
+      "value": "[ <'animation-delay-start'> <'animation-delay-end'>? ]#",
+      "initial": "see individual properties",
+      "appliesTo": "see individual properties",
+      "inherited": "see individual properties",
+      "percentages": "see individual properties",
+      "computedValue": "see individual properties",
+      "animationType": "see individual properties",
+      "canonicalOrder": "per grammar",
+      "styleDeclaration": [
+        "animation-delay",
+        "animationDelay"
+      ],
+      "longhands": [
+        "animation-delay-start",
+        "animation-delay-end"
+      ]
+    },
+    {
       "name": "animation-composition",
       "href": "https://drafts.csswg.org/css-animations-2/#propdef-animation-composition",
       "value": "<single-animation-composition>#",
@@ -123,7 +184,7 @@
     },
     {
       "name": "<single-animation>",
-      "value": "<'animation-duration'> || <easing-function> || <'animation-delay'> || <single-animation-iteration-count> || <single-animation-direction> || <single-animation-fill-mode> || <single-animation-play-state> || [ none | <keyframes-name> ] || <single-animation-timeline>",
+      "value": "<'animation-duration'> || <easing-function> || <'animation-delay-start'> || <single-animation-iteration-count> || <single-animation-direction> || <single-animation-fill-mode> || <single-animation-play-state> || [ none | <keyframes-name> ] || <single-animation-timeline>",
       "href": "https://drafts.csswg.org/css-animations-2/#typedef-single-animation",
       "type": "type"
     }

diff --ignore-trailing-space '--exclude=package.json' '--exclude=README.md' '--exclude=CHANGELOG.md' '--unified=3' webref/node_modules/@webref/css/css-backgrounds-4.json packages/css6/css-backgrounds-4.json
--- webref/node_modules/@webref/css/css-backgrounds-4.json
+++ packages/css6/css-backgrounds-4.json
@@ -682,13 +682,13 @@
       "name": "<bg-layer>",
       "href": "https://drafts.csswg.org/css-backgrounds-4/#typedef-bg-layer",
       "type": "type",
-      "value": "<bg-image> || <bg-position> [ / <bg-size> ]? || <repeat-style> || <attachment> || <bg-clip> || <visual-box>"
+      "value": "<bg-image> || <bg-position> [ / <bg-size> ]? || <repeat-style> || <attachment> || <visual-box> || <bg-clip>"
     },
     {
       "name": "<final-bg-layer>",
       "href": "https://drafts.csswg.org/css-backgrounds-4/#typedef-final-bg-layer",
       "type": "type",
-      "value": "<bg-image> || <bg-position> [ / <bg-size> ]? || <repeat-style> || <attachment> || <bg-clip> || <visual-box> || <'background-color'>"
+      "value": "<bg-image> || <bg-position> [ / <bg-size> ]? || <repeat-style> || <attachment> || <visual-box> || <bg-clip> || <'background-color'>"
     }
   ]
 }

diff --ignore-trailing-space '--exclude=package.json' '--exclude=README.md' '--exclude=CHANGELOG.md' '--unified=3' webref/node_modules/@webref/css/css-color.json packages/css6/css-color.json
--- webref/node_modules/@webref/css/css-color.json
+++ packages/css6/css-color.json
@@ -83,161 +83,161 @@
         },
         {
           "name": "ActiveBorder",
-          "prose": "Active window border. Same as ButtonBorder.",
+          "prose": "Active window border. Computes to the color of ButtonBorder.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-activeborder",
           "type": "value",
           "value": "ActiveBorder"
         },
         {
           "name": "ActiveCaption",
-          "prose": "Active window caption. Same as Canvas.",
+          "prose": "Active window caption. Computes to the color of Canvas.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-activecaption",
           "type": "value",
           "value": "ActiveCaption"
         },
         {
           "name": "AppWorkspace",
-          "prose": "Background color of multiple document interface. Same as Canvas.",
+          "prose": "Background color of multiple document interface. Computes to the color of Canvas.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-appworkspace",
           "type": "value",
           "value": "AppWorkspace"
         },
         {
           "name": "Background",
-          "prose": "Desktop background. Same as Canvas.",
+          "prose": "Desktop background. Computes to the color of Canvas.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-background",
           "type": "value",
           "value": "Background"
         },
         {
           "name": "ButtonHighlight",
-          "prose": "The color of the border facing the light source for 3-D elements that appear 3-D due to one layer of surrounding border. Same as ButtonFace.",
+          "prose": "The color of the border facing the light source for 3-D elements that appear 3-D due to one layer of surrounding border. Computes to the color of ButtonFace.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-buttonhighlight",
           "type": "value",
           "value": "ButtonHighlight"
         },
         {
           "name": "ButtonShadow",
-          "prose": "The color of the border away from the light source for 3-D elements that appear 3-D due to one layer of surrounding border. Same as ButtonFace.",
+          "prose": "The color of the border away from the light source for 3-D elements that appear 3-D due to one layer of surrounding border. Computes to the color of ButtonFace.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-buttonshadow",
           "type": "value",
           "value": "ButtonShadow"
         },
         {
           "name": "CaptionText",
-          "prose": "Text in caption, size box, and scrollbar arrow box. Same as CanvasText.",
+          "prose": "Text in caption, size box, and scrollbar arrow box. Computes to the color of CanvasText.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-captiontext",
           "type": "value",
           "value": "CaptionText"
         },
         {
           "name": "InactiveBorder",
-          "prose": "Inactive window border. Same as ButtonBorder.",
+          "prose": "Inactive window border. Computes to the color of ButtonBorder.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-inactiveborder",
           "type": "value",
           "value": "InactiveBorder"
         },
         {
           "name": "InactiveCaption",
-          "prose": "Inactive window caption. Same as Canvas.",
+          "prose": "Inactive window caption. Computes to the color of Canvas.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-inactivecaption",
           "type": "value",
           "value": "InactiveCaption"
         },
         {
           "name": "InactiveCaptionText",
-          "prose": "Color of text in an inactive caption. Same as GrayText.",
+          "prose": "Color of text in an inactive caption. Computes to the color of GrayText.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-inactivecaptiontext",
           "type": "value",
           "value": "InactiveCaptionText"
         },
         {
           "name": "InfoBackground",
-          "prose": "Background color for tooltip controls. Same as Canvas.",
+          "prose": "Background color for tooltip controls. Computes to the color of Canvas.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-infobackground",
           "type": "value",
           "value": "InfoBackground"
         },
         {
           "name": "InfoText",
-          "prose": "Text color for tooltip controls. Same as CanvasText.",
+          "prose": "Text color for tooltip controls. Computes to the color of CanvasText.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-infotext",
           "type": "value",
           "value": "InfoText"
         },
         {
           "name": "Menu",
-          "prose": "Menu background. Same as Canvas.",
+          "prose": "Menu background. Computes to the color of Canvas.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-menu",
           "type": "value",
           "value": "Menu"
         },
         {
           "name": "MenuText",
-          "prose": "Text in menus. Same as CanvasText.",
+          "prose": "Text in menus. Computes to the color of CanvasText.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-menutext",
           "type": "value",
           "value": "MenuText"
         },
         {
           "name": "Scrollbar",
-          "prose": "Scroll bar gray area. Same as Canvas.",
+          "prose": "Scroll bar gray area. Computes to the color of Canvas.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-scrollbar",
           "type": "value",
           "value": "Scrollbar"
         },
         {
           "name": "ThreeDDarkShadow",
-          "prose": "The color of the darker (generally outer) of the two borders away from the light source for 3-D elements that appear 3-D due to two concentric layers of surrounding border. Same as ButtonBorder.",
+          "prose": "The color of the darker (generally outer) of the two borders away from the light source for 3-D elements that appear 3-D due to two concentric layers of surrounding border. Computes to the color of ButtonBorder.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-threeddarkshadow",
           "type": "value",
           "value": "ThreeDDarkShadow"
         },
         {
           "name": "ThreeDFace",
-          "prose": "The face background color for 3-D elements that appear 3-D due to two concentric layers of surrounding border. Same as ButtonFace.",
+          "prose": "The face background color for 3-D elements that appear 3-D due to two concentric layers of surrounding border. Computes to the color of ButtonFace.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-threedface",
           "type": "value",
           "value": "ThreeDFace"
         },
         {
           "name": "ThreeDHighlight",
-          "prose": "The color of the lighter (generally outer) of the two borders facing the light source for 3-D elements that appear 3-D due to two concentric layers of surrounding border. Same as ButtonBorder.",
+          "prose": "The color of the lighter (generally outer) of the two borders facing the light source for 3-D elements that appear 3-D due to two concentric layers of surrounding border. Computes to the color of ButtonBorder.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-threedhighlight",
           "type": "value",
           "value": "ThreeDHighlight"
         },
         {
           "name": "ThreeDLightShadow",
-          "prose": "The color of the darker (generally inner) of the two borders facing the light source for 3-D elements that appear 3-D due to two concentric layers of surrounding border. Same as ButtonBorder.",
+          "prose": "The color of the darker (generally inner) of the two borders facing the light source for 3-D elements that appear 3-D due to two concentric layers of surrounding border. Computes to the color of ButtonBorder.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-threedlightshadow",
           "type": "value",
           "value": "ThreeDLightShadow"
         },
         {
           "name": "ThreeDShadow",
-          "prose": "The color of the lighter (generally inner) of the two borders away from the light source for 3-D elements that appear 3-D due to two concentric layers of surrounding border. Same as ButtonBorder.",
+          "prose": "The color of the lighter (generally inner) of the two borders away from the light source for 3-D elements that appear 3-D due to two concentric layers of surrounding border. Computes to the color of ButtonBorder.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-threedshadow",
           "type": "value",
           "value": "ThreeDShadow"
         },
         {
           "name": "Window",
-          "prose": "Window background. Same as Canvas.",
+          "prose": "Window background. Computes to the color of Canvas.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-window",
           "type": "value",
           "value": "Window"
         },
         {
           "name": "WindowFrame",
-          "prose": "Window frame. Same as ButtonBorder.",
+          "prose": "Window frame. Computes to the color of ButtonBorder.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-windowframe",
           "type": "value",
           "value": "WindowFrame"
         },
         {
           "name": "WindowText",
-          "prose": "Text in windows. Same as CanvasText.",
+          "prose": "Text in windows. Computes to the color of CanvasText.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-windowtext",
           "type": "value",
           "value": "WindowText"
@@ -1465,7 +1465,7 @@
       "values": [
         {
           "name": "srgb",
-          "prose": "The srgb [SRGB] color space accepts three numeric parameters, representing the red, green, and blue components of the color. In-gamut colors have all three components in the range [0, 1]. The whitepoint is D65. [SRGB] specifies two viewing conditions, encoding and typical. The [ICC] recommends using the encoding conditions for color conversion and for optimal viewing, which are the values in the table below. sRGB is the default color space for CSS, used for all the legacy color functions. It has the following characteristics: x y Red chromaticity 0.640 0.330 Green chromaticity 0.300 0.600 Blue chromaticity 0.150 0.060 White chromaticity D65 Transfer function see below White luminance 80.0 cd/m Black luminance 0.20 cd/m Image state display-referred Percentages Allowed for R, G and B Percent reference range for R,G,B: 0% = 0.0, 100% = 1.0 let sign = c < 0? -1 : 1; let abs = Math.abs(c); if (abs <= 0.04045) { cl = c / 12.92; } else { cl = sign * (Math.pow((abs + 0.055) / 1.055, 2.4)); } c is the gamma-encoded red, green or blue component. cl is the corresponding linear-light component. Visualization of the sRGB color space in LCH. The primaries and secondaries are shown.",
+          "prose": "The srgb [SRGB] color space accepts three numeric parameters, representing the red, green, and blue components of the color. In-gamut colors have all three components in the range [0, 1]. The whitepoint is D65. [SRGB] specifies two viewing conditions, encoding and typical. The [ICC] recommends using the encoding conditions for color conversion and for optimal viewing, which are the values in the table below. sRGB is the default color space for CSS, used for all the legacy color functions. It has the following characteristics: x y Red chromaticity 0.640 0.330 Green chromaticity 0.300 0.600 Blue chromaticity 0.150 0.060 White chromaticity D65 Transfer function see below White luminance 80.0 cd/m Black luminance 0.20 cd/m Image state display-referred Percentages Allowed for R, G and B Percent reference range for R,G,B: 0% = 0.0, 100% = 1.0 let sign = c < 0? -1 : 1; let abs = Math.abs(c); if (abs <= 0.04045) { cl = c / 12.92; } else { cl = sign * (Math.pow((abs + 0.055) / 1.055, 2.4)); } c is the gamma-encoded red, green or blue component. cl is the corresponding linear-light component. Visualization of the sRGB color space in Oklch. The primaries and secondaries are shown.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-srgb",
           "type": "value",
           "value": "srgb"
@@ -1479,7 +1479,7 @@
         },
         {
           "name": "display-p3",
-          "prose": "The display-p3 [Display-P3] color space accepts three numeric parameters, representing the red, green, and blue components of the color. In-gamut colors have all three components in the range [0, 1]. It uses the same primary chromaticities as [DCI-P3], but with a D65 whitepoint, and the same transfer curve as sRGB. Modern displays, TVs, laptop screens and phone screens are able to display all, or nearly all, of the display-p3 gamut. It has the following characteristics: x y Red chromaticity 0.680 0.320 Green chromaticity 0.265 0.690 Blue chromaticity 0.150 0.060 White chromaticity D65 Transfer function same as srgb White luminance 80.0 cd/m Black luminance 0.80 cd/m Image state display-referred Percentages Allowed for R, G and B Percent reference range for R,G,B: 0% = 0.0, 100% = 1.0 Visualization of the P3 color space in LCH. The primaries and secondaries are shown (but in sRGB, not in the correct colors). For comparison, the sRGB primaries and secondaries are also shown, as dashed circles. P3 primaries have higher Chroma.",
+          "prose": "The display-p3 [Display-P3] color space accepts three numeric parameters, representing the red, green, and blue components of the color. In-gamut colors have all three components in the range [0, 1]. It uses the same primary chromaticities as [DCI-P3], but with a D65 whitepoint, and the same transfer curve as sRGB. Modern displays, TVs, laptop screens and phone screens are able to display all, or nearly all, of the display-p3 gamut. It has the following characteristics: x y Red chromaticity 0.680 0.320 Green chromaticity 0.265 0.690 Blue chromaticity 0.150 0.060 White chromaticity D65 Transfer function same as srgb White luminance 80.0 cd/m Black luminance 0.80 cd/m Image state display-referred Percentages Allowed for R, G and B Percent reference range for R,G,B: 0% = 0.0, 100% = 1.0 Visualization of the P3 color space in Oklch. The primaries and secondaries are shown (but in sRGB, not in the correct colors). For comparison, the sRGB primaries and secondaries are also shown, as dashed circles. P3 primaries have higher Chroma.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-display-p3",
           "type": "value",
           "value": "display-p3"
@@ -1493,21 +1493,21 @@
         },
         {
           "name": "a98-rgb",
-          "prose": "The a98-rgb color space accepts three numeric parameters, representing the red, green, and blue components of the color. In-gamut colors have all three components in the range [0, 1]. The transfer curve is a gamma function, close to but not exactly 1/2.2. It has the following characteristics: x y Red chromaticity 0.6400 0.3300 Green chromaticity 0.2100 0.7100 Blue chromaticity 0.1500 0.0600 White chromaticity D65 Transfer function 256/563 White luminance 160.0 cd/m Black luminance 0.5557 cd/m Image state display-referred Percentages Allowed for R, G and B Percent reference range for R,G,B: 0% = 0.0, 100% = 1.0 Visualization of the A98 color space in LCH. The primaries and secondaries are shown (but in sRGB, not in the correct colors). For comparison, the sRGB primaries and secondaries are also shown, as dashed circles. a98 primaries have higher Chroma, especially the yellow, green and cyan.",
+          "prose": "The a98-rgb color space accepts three numeric parameters, representing the red, green, and blue components of the color. In-gamut colors have all three components in the range [0, 1]. The transfer curve is a gamma function, close to but not exactly 1/2.2. It has the following characteristics: x y Red chromaticity 0.6400 0.3300 Green chromaticity 0.2100 0.7100 Blue chromaticity 0.1500 0.0600 White chromaticity D65 Transfer function 256/563 White luminance 160.0 cd/m Black luminance 0.5557 cd/m Image state display-referred Percentages Allowed for R, G and B Percent reference range for R,G,B: 0% = 0.0, 100% = 1.0 Visualization of the A98 color space in Oklch. The primaries and secondaries are shown (but in sRGB, not in the correct colors). For comparison, the sRGB primaries and secondaries are also shown, as dashed circles. a98 primaries have higher Chroma, especially the yellow, green and cyan.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-a98-rgb",
           "type": "value",
           "value": "a98-rgb"
         },
         {
           "name": "prophoto-rgb",
-          "prose": "The prophoto-rgb color space accepts three numeric parameters, representing the red, green, and blue components of the color. In-gamut colors have all three components in the range [0, 1]. The transfer curve is a gamma function with a value of 1/1.8, and a small linear portion near black. The white point is D50, the same as is used by CIE Lab. Thus, conversion to CIE Lab does not require the chromatic adaptation step. The ProPhoto RGB space uses hyper-saturated, non physically realizable primaries. These were chosen to allow a wide color gamut and in particular, to minimize hue shifts under tonal manipulation. It is often used in digital photography as a wide gamut color space for the archival version of photographic images. The prophoto-rgb color space allows CSS to specify colors that will match colors in such images having the same RGB values. The ProPhoto RGB space was originally developed by Kodak and is described in [Wolfe]. It was standardized by ISO as [ROMM],[ROMM-RGB]. The white luminance is given as a range, and the viewing flare (and thus, the black luminance) is 0.5% to 1.0% of this. It has the following characteristics: x y Red chromaticity 0.734699 0.265301 Green chromaticity 0.159597 0.840403 Blue chromaticity 0.036598 0.000105 White chromaticity D50 Transfer function see below White luminance 160.0 to 640.0 cd/m Black luminance See text Image state display-referred Percentages Allowed for R, G and B Percent reference range for R,G,B: 0% = 0.0, 100% = 1.0 const E = 16/512; let sign = c < 0? -1 : 1; let abs = Math.abs(c); if (abs <= E) { cl = c / 16; } else { cl = sign * Math.pow(c, 1.8); } c is the gamma-encoded red, green or blue component. cl is the corresponding linear-light component. Visualization of the prophoto-rgb color space in LCH. The primaries and secondaries are shown (but in sRGB, not in the correct colors). For comparison, the sRGB primaries and secondaries are also shown, as dashed circles. prophoto-rgb primaries and secondaries have much higher Chroma, but much of this ultrawide gamut does not correspond to physically realizable colors.",
+          "prose": "The prophoto-rgb color space accepts three numeric parameters, representing the red, green, and blue components of the color. In-gamut colors have all three components in the range [0, 1]. The transfer curve is a gamma function with a value of 1/1.8, and a small linear portion near black. The white point is D50, the same as is used by CIE Lab. Thus, conversion to CIE Lab does not require the chromatic adaptation step. The ProPhoto RGB space uses hyper-saturated, non physically realizable primaries. These were chosen to allow a wide color gamut and in particular, to minimize hue shifts under tonal manipulation. It is often used in digital photography as a wide gamut color space for the archival version of photographic images. The prophoto-rgb color space allows CSS to specify colors that will match colors in such images having the same RGB values. The ProPhoto RGB space was originally developed by Kodak and is described in [Wolfe]. It was standardized by ISO as [ROMM],[ROMM-RGB]. The white luminance is given as a range, and the viewing flare (and thus, the black luminance) is 0.5% to 1.0% of this. It has the following characteristics: x y Red chromaticity 0.734699 0.265301 Green chromaticity 0.159597 0.840403 Blue chromaticity 0.036598 0.000105 White chromaticity D50 Transfer function see below White luminance 160.0 to 640.0 cd/m Black luminance See text Image state display-referred Percentages Allowed for R, G and B Percent reference range for R,G,B: 0% = 0.0, 100% = 1.0 const E = 16/512; let sign = c < 0? -1 : 1; let abs = Math.abs(c); if (abs <= E) { cl = c / 16; } else { cl = sign * Math.pow(c, 1.8); } c is the gamma-encoded red, green or blue component. cl is the corresponding linear-light component. Visualization of the prophoto-rgb color space in Oklch. The primaries and secondaries are shown (but in sRGB, not in the correct colors). For comparison, the sRGB primaries and secondaries are also shown, as dashed circles. prophoto-rgb primaries and secondaries have much higher Chroma, but much of this ultrawide gamut does not correspond to physically realizable colors.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-prophoto-rgb",
           "type": "value",
           "value": "prophoto-rgb"
         },
         {
           "name": "rec2020",
-          "prose": "The rec2020 [Rec.2020] color space accepts three numeric parameters, representing the red, green, and blue components of the color. In-gamut colors have all three components in the range [0, 1], (\"full-range\", in video terminology). ITU Reference 2020 is used for Ultra High Definition, 4k and 8k television. The primaries are physically realizable, but with difficulty as they lie very close to the spectral locus. Current displays are unable to reproduce the full gamut of rec2020. Coverage is expected to increase over time as displays improve. It has the following characteristics: x y Red chromaticity 0.708 0.292 Green chromaticity 0.170 0.797 Blue chromaticity 0.131 0.046 White chromaticity D65 Transfer function gamma 2.40, from [REC_BT.1886] Image state display-referred Percentages Allowed for R, G and B Percent reference range for R,G,B: 0% = 0.0, 100% = 1.0 Visualization of the rec2020 color space in LCH. The primaries and secondaries are shown (but in sRGB, not in the correct colors). For comparison, the sRGB primaries and secondaries are also shown, as dashed circles. rec2020 primaries have much higher Chroma.",
+          "prose": "The rec2020 [Rec.2020] color space accepts three numeric parameters, representing the red, green, and blue components of the color. In-gamut colors have all three components in the range [0, 1], (\"full-range\", in video terminology). ITU Reference 2020 is used for Ultra High Definition, 4k and 8k television. The primaries are physically realizable, but with difficulty as they lie very close to the spectral locus. Current displays are unable to reproduce the full gamut of rec2020. Coverage is expected to increase over time as displays improve. It has the following characteristics: x y Red chromaticity 0.708 0.292 Green chromaticity 0.170 0.797 Blue chromaticity 0.131 0.046 White chromaticity D65 Transfer function gamma 2.40, from [REC_BT.1886] Image state display-referred Percentages Allowed for R, G and B Percent reference range for R,G,B: 0% = 0.0, 100% = 1.0 Visualization of the rec2020 color space in Oklch. The primaries and secondaries are shown (but in sRGB, not in the correct colors). For comparison, the sRGB primaries and secondaries are also shown, as dashed circles. rec2020 primaries have much higher Chroma.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-rec2020",
           "type": "value",
           "value": "rec2020"
@@ -1597,161 +1597,161 @@
       "values": [
         {
           "name": "ActiveBorder",
-          "prose": "Active window border. Same as ButtonBorder.",
+          "prose": "Active window border. Computes to the color of ButtonBorder.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-activeborder",
           "type": "value",
           "value": "ActiveBorder"
         },
         {
           "name": "ActiveCaption",
-          "prose": "Active window caption. Same as Canvas.",
+          "prose": "Active window caption. Computes to the color of Canvas.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-activecaption",
           "type": "value",
           "value": "ActiveCaption"
         },
         {
           "name": "AppWorkspace",
-          "prose": "Background color of multiple document interface. Same as Canvas.",
+          "prose": "Background color of multiple document interface. Computes to the color of Canvas.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-appworkspace",
           "type": "value",
           "value": "AppWorkspace"
         },
         {
           "name": "Background",
-          "prose": "Desktop background. Same as Canvas.",
+          "prose": "Desktop background. Computes to the color of Canvas.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-background",
           "type": "value",
           "value": "Background"
         },
         {
           "name": "ButtonHighlight",
-          "prose": "The color of the border facing the light source for 3-D elements that appear 3-D due to one layer of surrounding border. Same as ButtonFace.",
+          "prose": "The color of the border facing the light source for 3-D elements that appear 3-D due to one layer of surrounding border. Computes to the color of ButtonFace.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-buttonhighlight",
           "type": "value",
           "value": "ButtonHighlight"
         },
         {
           "name": "ButtonShadow",
-          "prose": "The color of the border away from the light source for 3-D elements that appear 3-D due to one layer of surrounding border. Same as ButtonFace.",
+          "prose": "The color of the border away from the light source for 3-D elements that appear 3-D due to one layer of surrounding border. Computes to the color of ButtonFace.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-buttonshadow",
           "type": "value",
           "value": "ButtonShadow"
         },
         {
           "name": "CaptionText",
-          "prose": "Text in caption, size box, and scrollbar arrow box. Same as CanvasText.",
+          "prose": "Text in caption, size box, and scrollbar arrow box. Computes to the color of CanvasText.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-captiontext",
           "type": "value",
           "value": "CaptionText"
         },
         {
           "name": "InactiveBorder",
-          "prose": "Inactive window border. Same as ButtonBorder.",
+          "prose": "Inactive window border. Computes to the color of ButtonBorder.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-inactiveborder",
           "type": "value",
           "value": "InactiveBorder"
         },
         {
           "name": "InactiveCaption",
-          "prose": "Inactive window caption. Same as Canvas.",
+          "prose": "Inactive window caption. Computes to the color of Canvas.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-inactivecaption",
           "type": "value",
           "value": "InactiveCaption"
         },
         {
           "name": "InactiveCaptionText",
-          "prose": "Color of text in an inactive caption. Same as GrayText.",
+          "prose": "Color of text in an inactive caption. Computes to the color of GrayText.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-inactivecaptiontext",
           "type": "value",
           "value": "InactiveCaptionText"
         },
         {
           "name": "InfoBackground",
-          "prose": "Background color for tooltip controls. Same as Canvas.",
+          "prose": "Background color for tooltip controls. Computes to the color of Canvas.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-infobackground",
           "type": "value",
           "value": "InfoBackground"
         },
         {
           "name": "InfoText",
-          "prose": "Text color for tooltip controls. Same as CanvasText.",
+          "prose": "Text color for tooltip controls. Computes to the color of CanvasText.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-infotext",
           "type": "value",
           "value": "InfoText"
         },
         {
           "name": "Menu",
-          "prose": "Menu background. Same as Canvas.",
+          "prose": "Menu background. Computes to the color of Canvas.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-menu",
           "type": "value",
           "value": "Menu"
         },
         {
           "name": "MenuText",
-          "prose": "Text in menus. Same as CanvasText.",
+          "prose": "Text in menus. Computes to the color of CanvasText.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-menutext",
           "type": "value",
           "value": "MenuText"
         },
         {
           "name": "Scrollbar",
-          "prose": "Scroll bar gray area. Same as Canvas.",
+          "prose": "Scroll bar gray area. Computes to the color of Canvas.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-scrollbar",
           "type": "value",
           "value": "Scrollbar"
         },
         {
           "name": "ThreeDDarkShadow",
-          "prose": "The color of the darker (generally outer) of the two borders away from the light source for 3-D elements that appear 3-D due to two concentric layers of surrounding border. Same as ButtonBorder.",
+          "prose": "The color of the darker (generally outer) of the two borders away from the light source for 3-D elements that appear 3-D due to two concentric layers of surrounding border. Computes to the color of ButtonBorder.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-threeddarkshadow",
           "type": "value",
           "value": "ThreeDDarkShadow"
         },
         {
           "name": "ThreeDFace",
-          "prose": "The face background color for 3-D elements that appear 3-D due to two concentric layers of surrounding border. Same as ButtonFace.",
+          "prose": "The face background color for 3-D elements that appear 3-D due to two concentric layers of surrounding border. Computes to the color of ButtonFace.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-threedface",
           "type": "value",
           "value": "ThreeDFace"
         },
         {
           "name": "ThreeDHighlight",
-          "prose": "The color of the lighter (generally outer) of the two borders facing the light source for 3-D elements that appear 3-D due to two concentric layers of surrounding border. Same as ButtonBorder.",
+          "prose": "The color of the lighter (generally outer) of the two borders facing the light source for 3-D elements that appear 3-D due to two concentric layers of surrounding border. Computes to the color of ButtonBorder.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-threedhighlight",
           "type": "value",
           "value": "ThreeDHighlight"
         },
         {
           "name": "ThreeDLightShadow",
-          "prose": "The color of the darker (generally inner) of the two borders facing the light source for 3-D elements that appear 3-D due to two concentric layers of surrounding border. Same as ButtonBorder.",
+          "prose": "The color of the darker (generally inner) of the two borders facing the light source for 3-D elements that appear 3-D due to two concentric layers of surrounding border. Computes to the color of ButtonBorder.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-threedlightshadow",
           "type": "value",
           "value": "ThreeDLightShadow"
         },
         {
           "name": "ThreeDShadow",
-          "prose": "The color of the lighter (generally inner) of the two borders away from the light source for 3-D elements that appear 3-D due to two concentric layers of surrounding border. Same as ButtonBorder.",
+          "prose": "The color of the lighter (generally inner) of the two borders away from the light source for 3-D elements that appear 3-D due to two concentric layers of surrounding border. Computes to the color of ButtonBorder.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-threedshadow",
           "type": "value",
           "value": "ThreeDShadow"
         },
         {
           "name": "Window",
-          "prose": "Window background. Same as Canvas.",
+          "prose": "Window background. Computes to the color of Canvas.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-window",
           "type": "value",
           "value": "Window"
         },
         {
           "name": "WindowFrame",
-          "prose": "Window frame. Same as ButtonBorder.",
+          "prose": "Window frame. Computes to the color of ButtonBorder.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-windowframe",
           "type": "value",
           "value": "WindowFrame"
         },
         {
           "name": "WindowText",
-          "prose": "Text in windows. Same as CanvasText.",
+          "prose": "Text in windows. Computes to the color of CanvasText.",
           "href": "https://drafts.csswg.org/css-color-4/#valdef-color-windowtext",
           "type": "value",
           "value": "WindowText"

diff --ignore-trailing-space '--exclude=package.json' '--exclude=README.md' '--exclude=CHANGELOG.md' '--unified=3' webref/node_modules/@webref/css/css-mixins.json packages/css6/css-mixins.json
--- webref/node_modules/@webref/css/css-mixins.json
+++ packages/css6/css-mixins.json
@@ -31,7 +31,7 @@
       "name": "@mixin",
       "href": "https://drafts.csswg.org/css-mixins-1/#at-ruledef-mixin",
       "descriptors": [],
-      "value": "@mixin <function-token> <function-parameter>#? ) { <declaration-rule-list> }"
+      "value": "@mixin [<function-token> <function-parameter>#? ) | <ident-token> ] { <declaration-rule-list> }"
     },
     {
       "name": "@result",

diff --ignore-trailing-space '--exclude=package.json' '--exclude=README.md' '--exclude=CHANGELOG.md' '--unified=3' webref/node_modules/@webref/css/css-navigation.json packages/css6/css-navigation.json
--- webref/node_modules/@webref/css/css-navigation.json
+++ packages/css6/css-navigation.json
@@ -1,6 +1,6 @@
 {
   "spec": {
-    "title": "CSS Route Matching",
+    "title": "CSS Route and Navigation Matching",
     "url": "https://drafts.csswg.org/css-navigation-1/"
   },
   "properties": [],

diff --ignore-trailing-space '--exclude=package.json' '--exclude=README.md' '--exclude=CHANGELOG.md' '--unified=3' webref/node_modules/@webref/css/css-properties-values-api.json packages/css6/css-properties-values-api.json
--- webref/node_modules/@webref/css/css-properties-values-api.json
+++ packages/css6/css-properties-values-api.json
@@ -31,7 +31,7 @@
           "initial": "the guaranteed-invalid value (but see prose)"
         }
       ],
-      "value": "@property <custom-property-name> { <declaration-list> }"
+      "value": "@property <custom-property-name># { <declaration-list> }"
     }
   ],
   "selectors": [],

diff --ignore-trailing-space '--exclude=package.json' '--exclude=README.md' '--exclude=CHANGELOG.md' '--unified=3' webref/node_modules/@webref/css/css-values-5.json packages/css6/css-values-5.json
--- webref/node_modules/@webref/css/css-values-5.json
+++ packages/css6/css-values-5.json
@@ -18,14 +18,14 @@
       "values": [
         {
           "name": "numeric-only",
-          "prose": "An <intrinsic-size-keyword> cannot be interpolated.",
+          "prose": "A <size-keyword> can only be combined with a compatible <calc-size()>.",
           "href": "https://drafts.csswg.org/css-values-5/#valdef-interpolate-size-numeric-only",
           "type": "value",
           "value": "numeric-only"
         },
         {
           "name": "allow-keywords",
-          "prose": "Two values can also be interpolated if one of them is an <intrinsic-size-keyword> and the other is a <length-percentage>. This is done by treating the <intrinsic-size-keyword> keyword as though it is calc-size(keyword, size) and applying the rules in § 11.3 Interpolating calc-size(). In other cases, an <intrinsic-size-keyword> still cannot be interpolated.",
+          "prose": "Sizing values can also be combined if one of them is an <size-keyword> and the other is a <length-percentage>. This is done by treating the <size-keyword> keyword as though it is calc-size(keyword, size) and applying the rules in § 11.2 Interpolating calc-size(). In other cases, a <size-keyword> still cannot be interpolated.",
           "href": "https://drafts.csswg.org/css-values-5/#valdef-interpolate-size-allow-keywords",
           "type": "value",
           "value": "allow-keywords"
@@ -788,23 +788,44 @@
     },
     {
       "name": "calc-size()",
+      "prose": "The calc-size() function allows math and transition/animation to be performed on these sizes in a safe, well-defined way. Its syntax is as follows:",
       "href": "https://drafts.csswg.org/css-values-5/#funcdef-calc-size",
       "type": "function",
       "value": "calc-size( <calc-size-basis>, <calc-sum> )",
       "values": [
         {
-          "name": "size",
-          "prose": "Within the calc-size calculation, if the calc-size basis is not any, the keyword size is allowed. This keyword is a <length>, and resolves at used value time.",
-          "href": "https://drafts.csswg.org/css-values-5/#valdef-calc-size-size",
+          "name": "<size-keyword>",
+          "prose": "Indicates that the calc-size() is basing its size off of the specified keyword. Represents any sizing keywords allowed in the context where the function is used. For example, in width, it matches auto, min-content, stretch, etc. Also allows any related sizing functions, like the fit-content() function in width/etc., which is a variation of the fit-content keyword. For all purposes other than actually resolving the size, the calc-size() acts like this keyword. The calc-size calculation will use the corresponding size as the value of its size keyword.",
+          "href": "https://drafts.csswg.org/css-values-5/#typedef-calc-size-size-keyword",
+          "type": "type"
+        },
+        {
+          "name": "<calc-sum>",
+          "prose": "Indicates that the calc-size() is basing its size off of the specified calculation. For all purposes other than actually resolving the size, the calc-size() acts like this calculation wrapped in a calc() (including, for example, whether it represents a definite or indefinite size). The calc-size calculation will use the corresponding size as the value of its size keyword.",
+          "href": "https://drafts.csswg.org/css-values-5/#valdef-calc-size-calc-sum",
           "type": "value",
-          "value": "size"
+          "value": "<calc-sum>"
+        },
+        {
+          "name": "<calc-size()>",
+          "prose": "Indicates that the outer calc-size() is basing its size off of this inner calc-size(), and will share the same behavior as it. The calc-size calculation will use the size of the inner calc-size() as its size keyword. The size keyword is allowed, in this case, even if the inner calc-size() uses any. For example, in calc-size(calc-size(min-content, size / 2), size + 10%), the outer calc-size() acts as if its calc-size basis was min-content, and will calculate its own size using the result of the inner calc-size(), equivalent to calc-size(min-content, size / 2 + 10%).",
+          "href": "https://drafts.csswg.org/css-values-5/#valdef-calc-size-calc-size",
+          "type": "value",
+          "value": "<calc-size()>"
         },
         {
           "name": "any",
-          "prose": "(If the calc-size basis is any, the calc-size() is a definite length, equal to its calc-size calculation.)",
+          "prose": "Indicates that the calc-size() does not depend on any additional information, and thus can be interpolated with any other size. The calc-size() function represents a definite size. The calc-size calculation cannot use the size keyword; it is a syntax error for size to appear in the calc-size calculation.",
           "href": "https://drafts.csswg.org/css-values-5/#valdef-calc-size-any",
           "type": "value",
           "value": "any"
+        },
+        {
+          "name": "size",
+          "prose": "Within the calc-size calculation, the size is a <calc-keyword> which is a <length>, and resolves at used value time to the size specified above.",
+          "href": "https://drafts.csswg.org/css-values-5/#valdef-calc-size-size",
+          "type": "value",
+          "value": "size"
         }
       ]
     },
@@ -812,13 +833,7 @@
       "name": "<calc-size-basis>",
       "href": "https://drafts.csswg.org/css-values-5/#typedef-calc-size-basis",
       "type": "type",
-      "value": "[ <size-keyword> | <calc-size()> | any | <calc-sum> ]"
-    },
-    {
-      "name": "<size-keyword>",
-      "prose": "The <size-keyword> production matches any sizing keywords allowed in the context. For example, in width, it matches auto, min-content, stretch, etc.",
-      "href": "https://drafts.csswg.org/css-values-5/#typedef-size-keyword",
-      "type": "type"
+      "value": "[ <size-keyword> | <calc-sum> | <calc-size()> | any ]"
     }
   ],
   "warnings": [
@@ -841,6 +856,15 @@
       "msg": "Missing definition",
       "name": "interpolate-function()",
       "value": "interpolate-function( [ <progress-source> && [ by <easing-function> ]? && <easing-function>? && <segment-options>? ] , <input-position>{1,2} : <output-value> , [ [ <easing-function> || <segment-options> ]? , <input-position>{1,2} : <output-value> ]#? )"
+    },
+    {
+      "msg": "Dangling value",
+      "name": "size",
+      "prose": "Within the calc-size calculation, the size is a <calc-keyword> which is a <length>, and resolves at used value time to the size specified above.",
+      "href": "https://drafts.csswg.org/css-values-5/#valdef-calc-size-size",
+      "type": "value",
+      "value": "size",
+      "for": "calc()"
     }
   ]
 }

diff --ignore-trailing-space '--exclude=package.json' '--exclude=README.md' '--exclude=CHANGELOG.md' '--unified=3' webref/node_modules/@webref/css/css-view-transitions.json packages/css6/css-view-transitions.json
--- webref/node_modules/@webref/css/css-view-transitions.json
+++ packages/css6/css-view-transitions.json
@@ -241,7 +241,8 @@
       "name": "<view-transition-type>",
       "prose": "where <view-transition-type> is any <custom-ident> other than none, and not starting with the string \"-ua-\".",
       "href": "https://drafts.csswg.org/css-view-transitions-2/#typedef-view-transition-type",
-      "type": "type"
+      "type": "type",
+      "value": "<custom-ident>"
     },
     {
       "name": "<pt-name-and-class-selector>",

diff --ignore-trailing-space '--exclude=package.json' '--exclude=README.md' '--exclude=CHANGELOG.md' '--unified=3' webref/node_modules/@webref/css/selectors.json packages/css6/selectors.json
--- webref/node_modules/@webref/css/selectors.json
+++ packages/css6/selectors.json
@@ -39,7 +39,7 @@
     },
     {
       "name": ":dir()",
-      "prose": "The :dir() pseudo-class allows the author to write selectors that represent an element based on its directionality as determined by the document language. For example, [HTML5] defines how to determine the directionality of an element, based on a combination of the dir attribute, the surrounding text, and other factors. As another example, the its:dir and dirRule element of the Internationalization Tag Set [ITS20] are able to define the directionality of an element in [XML10].",
+      "prose": "The :dir() pseudo-class allows the author to write selectors that represent an element based on its directionality as determined by the document language. For example, [HTML] defines how to determine the directionality of an element, based on a combination of the dir attribute, the surrounding text, and other factors. As another example, the its:dir and dirRule element of the Internationalization Tag Set [ITS20] are able to define the directionality of an element in [XML10].",
       "href": "https://drafts.csswg.org/selectors-4/#dir-pseudo"
     },
     {
@@ -49,7 +49,7 @@
     },
     {
       "name": ":any-link",
-      "prose": "The :any-link pseudo-class represents an element that acts as the source anchor of a hyperlink. For example, in [HTML5], any a or area elements with an href attribute are hyperlinks, and thus match :any-link. It matches an element if the element would match either :link or :visited, and is equivalent to :is(:link, :visited).",
+      "prose": "The :any-link pseudo-class represents an element that acts as the source anchor of a hyperlink. For example, in [HTML], any a or area elements with an href attribute are hyperlinks, and thus match :any-link. It matches an element if the element would match either :link or :visited, and is equivalent to :is(:link, :visited).",
       "href": "https://drafts.csswg.org/selectors-4/#any-link-pseudo",
       "value": ":any-link"
     },
@@ -205,7 +205,7 @@
     },
     {
       "name": ":placeholder-shown",
-      "prose": "Input elements can sometimes show placeholder text as a hint to the user on what to type in. See, for example, the placeholder attribute in [HTML5]. The :placeholder-shown pseudo-class matches an input element that is showing such placeholder text, whether that text is given by an attribute or a real element, or is otherwise implied by the UA.",
+      "prose": "Input elements can sometimes show placeholder text as a hint to the user on what to type in. See, for example, the placeholder attribute in [HTML]. The :placeholder-shown pseudo-class matches an input element that is showing such placeholder text, whether that text is given by an attribute or a real element, or is otherwise implied by the UA.",
       "href": "https://drafts.csswg.org/selectors-4/#placeholder-shown-pseudo",
       "value": ":placeholder-shown"
     },
@@ -223,13 +223,13 @@
     },
     {
       "name": ":checked",
-      "prose": "When such elements are toggled “on” the :checked pseudo-class applies. For example, [HTML5] defines that checked checkboxes, radio buttons, and selected <option> elements match :checked. Similarly, when such elements are toggled “off”, the :unchecked pseudo-class applies.",
+      "prose": "When such elements are toggled “on” the :checked pseudo-class applies. For example, [HTML] defines that checked checkboxes, radio buttons, and selected <option> elements match :checked. Similarly, when such elements are toggled “off”, the :unchecked pseudo-class applies.",
       "href": "https://drafts.csswg.org/selectors-4/#checked-pseudo",
       "value": ":checked"
     },
     {
       "name": ":unchecked",
-      "prose": "When such elements are toggled “on” the :checked pseudo-class applies. For example, [HTML5] defines that checked checkboxes, radio buttons, and selected <option> elements match :checked. Similarly, when such elements are toggled “off”, the :unchecked pseudo-class applies.",
+      "prose": "When such elements are toggled “on” the :checked pseudo-class applies. For example, [HTML] defines that checked checkboxes, radio buttons, and selected <option> elements match :checked. Similarly, when such elements are toggled “off”, the :unchecked pseudo-class applies.",
       "href": "https://drafts.csswg.org/selectors-4/#unchecked-pseudo",
       "value": ":unchecked"
     },
@@ -241,13 +241,13 @@
     },
     {
       "name": ":valid",
-      "prose": "An element is :valid or :invalid when its contents or value is, respectively, valid or invalid with respect to data validity semantics defined by the document language (e.g. [XFORMS11] or [HTML5]). An element which lacks data validity semantics is neither :valid nor :invalid.",
+      "prose": "An element is :valid or :invalid when its contents or value is, respectively, valid or invalid with respect to data validity semantics defined by the document language (e.g. [XFORMS11] or [HTML]). An element which lacks data validity semantics is neither :valid nor :invalid.",
       "href": "https://drafts.csswg.org/selectors-4/#valid-pseudo",
       "value": ":valid"
     },
     {
       "name": ":invalid",
-      "prose": "An element is :valid or :invalid when its contents or value is, respectively, valid or invalid with respect to data validity semantics defined by the document language (e.g. [XFORMS11] or [HTML5]). An element which lacks data validity semantics is neither :valid nor :invalid.",
+      "prose": "An element is :valid or :invalid when its contents or value is, respectively, valid or invalid with respect to data validity semantics defined by the document language (e.g. [XFORMS11] or [HTML]). An element which lacks data validity semantics is neither :valid nor :invalid.",
       "href": "https://drafts.csswg.org/selectors-4/#invalid-pseudo",
       "value": ":invalid"
     },
@@ -549,5 +549,25 @@
       "href": "https://drafts.csswg.org/selectors-4/#typedef-forgiving-selector-list",
       "type": "type"
     }
+  ],
+  "warnings": [
+    {
+      "msg": "Dangling value",
+      "name": "i",
+      "prose": "To match attribute values ASCII case-insensitively regardless of document language rules, the attribute selector may include the identifier i before the closing bracket (]). When this flag is present, UAs must match the attribute’s value ASCII case-insensitively (i.e. [a-z] and [A-Z] are considered equivalent).",
+      "href": "https://drafts.csswg.org/selectors-4/#valdef-attribute-selector-i",
+      "type": "value",
+      "value": "i",
+      "for": "attribute selector"
+    },
+    {
+      "msg": "Dangling value",
+      "name": "s",
+      "prose": "Alternately, the attribute selector may include the identifier s before the closing bracket (]); in this case the UA must match the value case-sensitively, with “identical to” semantics [INFRA], regardless of document language rules.",
+      "href": "https://drafts.csswg.org/selectors-4/#valdef-attribute-selector-s",
+      "type": "value",
+      "value": "s",
+      "for": "attribute selector"
+    }
   ]
 }