ok lets try some more bikeshed syntax for property descriptor disambiguation

Author: svgeesus

css-fonts-4/Overview.bs

@@ -933,7 +933,7 @@ Shorthand font property: the 'font' property</h3>
 
 <pre class="propdef">
 Name: font
-Value: [ [ <<'font-style'>> || <<font-variant-css21>> || <<'font-weight'>> || <<font-stretch-css3>> ]? <<'font-size'>> [ / <<'line-height'>> ]? <<'font-family'>> ] | caption | icon | menu | message-box | small-caption | status-bar
+Value: [ [ <<'font-style!!property'>> || <<font-variant-css21>> || <<'font-weight!!property'>> || <<font-stretch-css3>> ]? <<'font-size!!property'>> [ / <<'line-height'>> ]? <<'font-family!!property'>> ] | caption | icon | menu | message-box | small-caption | status-bar
 Initial: see individual properties
 Applies to: all elements
 Inherited: yes
@@ -943,7 +943,7 @@ Media: visual
 Animatable: see individual properties
 </pre>
 
-The 'font' property is,
+The 'font!!property' property is,
 except as described below,
 a shorthand property for setting
 'font-style!!property', 'font-variant!!property', 'font-weight!!property', 'font-stretch!!property',
@@ -964,10 +964,10 @@ CSS Fonts level 3, none of the 'font-stretch!!property' values added in this spe
 The syntax of this property is based on a traditional typographical
 shorthand notation to set multiple properties related to fonts.
 
-All subproperties of the 'font' property are first reset to their initial values,
-including those listed above plus 'font-size-adjust', 'font-kerning', all subproperties of 'font-variant', 'font-feature-settings',
-'font-language-override', 'font-min-size', 'font-max-size', 'font-optical-sizing', 'font-variation-settings', and 'font-palette'.
-Then, those properties that are given explicit values in the 'font'
+All subproperties of the 'font!!property' property are first reset to their initial values,
+including those listed above plus 'font-size-adjust', 'font-kerning', all subproperties of 'font-variant!!property', 'font-feature-settings!!property',
+'font-language-override', 'font-min-size', 'font-max-size', 'font-optical-sizing', 'font-variation-settings!!property', and 'font-palette'.
+Then, those properties that are given explicit values in the 'font!!property'
 shorthand are set to those values. For a definition of allowed and
 initial values, see the previously defined properties. For reasons of
 backwards compatibility, it is not possible to set 'font-size-adjust'
@@ -1934,7 +1934,7 @@ body { font-family: DroidSans; }
 </div>
 
 <h3 id="font-rend-desc">
-Font features and variations: the 'font-variant', 'font-feature-settings', and 'font-variation-settings' descriptors</h3>
+Font features and variations: the 'font-variant!!descriptor', 'font-feature-settings!!descriptor', and 'font-variation-settings!!descriptor' descriptors</h3>
 
 <pre class='descdef'>
 Name: font-variant
@@ -1969,15 +1969,16 @@ For: @font-face
 These descriptors define initial settings that apply when the font defined by
 an <code>@font-face</code> rule is rendered.  They do not affect font selection.
 Values are identical to those defined for the corresponding
-'font-variant', 'font-feature-settings', and 'font-variation-settings' properties defined below
+'font-variant!!property', 'font-feature-settings!!property', and
+'font-variation-settings!!property' properties defined below
 except that the value 'inherit' is omitted.  When multiple font
 feature descriptors, properties, or variations are used, the cumulative effect on
 text rendering is detailed in the section
 <a href="#font-feature-variation-resolution">Font Feature and Variation Resolution</a> below.
 In cases where specific values define synthesized fallback for certain
-'font-variant' subproperties, the same synthesized fallback
+'font-variant!!property' subproperties, the same synthesized fallback
 applies when used within those values are used with the
-'font-variant' descriptor.
+'font-variant!!descriptor' descriptor.
 
 <h4 id="font-face-loading">Font loading guidelines</h4>
 
@@ -2662,7 +2663,7 @@ font can provide glyphs for a wide range of ligatures, contextual and
 stylistic alternates, tabular and old-style figures, small capitals,
 automatic fractions, swashes, and alternates specific to a given
 language. To allow authors control over these font capabilities, the
-'font-variant' property has been expanded for CSS3. It now functions as
+'font-variant!!property' property has been expanded for CSS3. It now functions as
 a shorthand for a set of properties that provide control over
 stylistic font features.
 
@@ -2697,7 +2698,7 @@ surrounding context, such as kerning and ligature features, and ones
 such as the small-caps, subscript/superscript and alternate features
 that affect shape selection.
 
-The subproperties of 'font-variant' listed below are used to control
+The subproperties of 'font-variant!!property' listed below are used to control
 these stylistic font features. They do not control features that are
 required for displaying certain scripts, such as the OpenType features
 used when displaying Arabic or Indic language text.  They affect glyph
@@ -2791,7 +2792,7 @@ Issue: Moved to Level 4; port the text for this from Fonts 3 .src to Fonts 4 .bs
 East Asian text rendering: the 'font-variant-east-asian' property</h3>
 
 <h3 id="font-variant-prop">
-Overall shorthand for font rendering: the 'font-variant' property</h3>
+Overall shorthand for font rendering: the 'font-variant!!property' property</h3>
 
 <h3 id="font-feature-settings-prop">
 Low-level font feature settings control: the 'font-feature-settings' property</h3>
@@ -2803,9 +2804,9 @@ Font Feature and Variation Resolution</h3>
 
 As described in the previous section,
 font features and variations can be enabled in a variety of ways,
-either via the use of 'font-variant',
-'font-feature-settings',
-'font''font-variation-settings' in a style rule
+either via the use of 'font-variant!!property',
+'font-feature-settings!!property',
+'font''font-variation-settings!!property' in a style rule
 or within an ''@font-face'' rule.
 The resolution order for the union of these settings is defined below.
 Features defined via CSS properties are applied on top of layout engine default features.
@@ -2825,9 +2826,9 @@ along with localized forms
 and features required for proper display of composed characters and marks
 (OpenType features: <span class="tag">ccmp, mark, mkmk</span>).
 These features must always be enabled,
-even when the value of the 'font-variant' and 'font-feature-settings' properties is 'normal'.
+even when the value of the 'font-variant!!property' and 'font-feature-settings!!property' properties is 'normal'.
 Individual features are only disabled when explicitly overridden by the author,
-as when 'font-variant-ligatures' is set to 'no-common-ligatures'.
+as when 'font-variant-ligatures!!property' is set to 'no-common-ligatures'.
 
 For handling complex scripts such as
 <a href="https://www.microsoft.com/typography/otfntdev/arabicot/features.aspx">Arabic</a>,
@@ -2896,7 +2897,7 @@ This ordering allows authors to set up a general set of defaults
 for fonts within their ''@font-face'' rules, then override them with
 property settings for specific elements.  General property settings
 override the settings in ''@font-face'' rules and low-level font feature
-settings override 'font-variant' property settings.
+settings override 'font-variant!!property' property settings.
 
 For situations where the combined list of font feature settings
 contains more than one value for the same feature, the last value is