ok lets try some more bikeshed syntax for property descriptor disambiguation

Author: svgeesus

css-fonts-4/Overview.bs

@@ -456,7 +456,7 @@ Previously, interpolated values of font-weight were rounded to their closest mul
 rounded values. In this specification, the font-matching algorithm is able to accept any value, so no rounding occurs. The small behavior change is due to the discontinuous nature of the font-matching algorithm.
 
 <h3 id="font-stretch-prop">
-Font width: the 'font-stretch' property</h3>
+Font width: the 'font-stretch!!property' property</h3>
 
 <pre class="propdef">
 Name: font-stretch
@@ -470,7 +470,7 @@ Media: visual
 Animatable: As <<number>>
 </pre>
 
-The 'font-stretch' property selects a normal,
+The 'font-stretch!!property' property selects a normal,
 condensed, or expanded face from a font family.
 
 This property accepts values of the following:
@@ -956,8 +956,8 @@ none of the 'font-variant!!property' values added in this specification can be u
 
 <pre class="prod"><dfn id="font-variant-css21-values">&lt;font-variant-css21&gt;</dfn> = [normal | small-caps]</pre>
 
-Values for the 'font-stretch' property can also be included but only those supported in
-CSS Fonts level 3, none of the 'font-stretch' values added in this specification can be used in the 'font' shorthand:
+Values for the 'font-stretch!!property' property can also be included but only those supported in
+CSS Fonts level 3, none of the 'font-stretch!!property' values added in this specification can be used in the 'font' shorthand:
 
 <pre class="prod"><dfn id="font-stretch-css3-values">&lt;font-stretch-css3&gt;</dfn> = [normal | ultra-condensed | extra-condensed | condensed | semi-condensed | semi-expanded | expanded | extra-expanded | ultra-expanded]</pre>
 
@@ -2371,11 +2371,11 @@ if all font style properties were set to their initial value.
 		a single <dfn>composite face</dfn> for this step:
 
 		<ol id="fontstylematchingalg">
-			1. 'font-stretch' is tried first. If a font
+			1. 'font-stretch!!property' is tried first. If a font
 				does not have any concept of varying strengths of stretch values, its stretch value
 				is mapped according table in the <a href="#stretchmappings">property definition</a>.
 				If the matching set includes faces with width values
-				containing the 'font-stretch' desired value, faces with width values which do not include the desired width value
+				containing the 'font-stretch!!property' desired value, faces with width values which do not include the desired width value
 				are removed from the matching set. If there is no face
 				which contains the desired value, a stretch value is chosen using the rules below:
 
@@ -2395,7 +2395,7 @@ if all font style properties were set to their initial value.
 				<div class="example" id="ascendingstretch">
 					This search algorithm can be thought of as a distance function, where the lowest-distance value present in the font family is selected, and all fonts not including that value are eliminated.
 
-					Consider a font family with three fonts, named A, B, and C, each with associated supported ranges for the 'font-stretch' descriptor. If an element is styled with "font-stretch: 125", the search algorithm can be visualized as follows:
+					Consider a font family with three fonts, named A, B, and C, each with associated supported ranges for the 'font-stretch!!property' descriptor. If an element is styled with "font-stretch: 125", the search algorithm can be visualized as follows:
 
 					<img src="images/stretchdistance.svg" alt="algorithm">