Merge branch 'main' into FormatDateTimePattern-nanoseconds

package.json

@@ -18,7 +18,7 @@
   "license": "SEE LICENSE IN https://tc39.es/ecma402/#sec-copyright-and-software-license",
   "homepage": "https://tc39.es/ecma402/",
   "dependencies": {
-    "ecmarkup": "^18.1.2",
-    "@tc39/ecma262-biblio": "2.1.2719"
+    "ecmarkup": "^19.0.0",
+    "@tc39/ecma262-biblio": "2.1.2742"
   }
 }

spec/annexes.html

@@ -183,19 +183,19 @@ <h1>Additions and Changes That Introduce Incompatibilities with Prior Editions</
       <emu-xref href="#sec-intl.datetimeformat.prototype.format"></emu-xref> In ECMA-402, 1<sup>st</sup> Edition, the *"length"* property of the function object _F_ was set to *+0*<sub>𝔽</sub>. In 2nd Edition, *"length"* is set to *1*<sub>𝔽</sub>.
     </li>
     <li>
-      <emu-xref href="#sec-intl.collator.prototype-@@tostringtag"></emu-xref> In ECMA-402, 7<sup>th</sup> Edition, the @@toStringTag property of `Intl.Collator.prototype` was set to *"Object"*. In 8<sup>th</sup> Edition, @@toStringTag is set to *"Intl.Collator"*.
+      <emu-xref href="#sec-intl.collator.prototype-%symbol.tostringtag%"></emu-xref> In ECMA-402, 7<sup>th</sup> Edition, the %Symbol.toStringTag% property of `Intl.Collator.prototype` was set to *"Object"*. In 8<sup>th</sup> Edition, %Symbol.toStringTag% is set to *"Intl.Collator"*.
     </li>
     <li>
-      <emu-xref href="#sec-intl.datetimeformat.prototype-@@tostringtag"></emu-xref> In ECMA-402, 7<sup>th</sup> Edition, the @@toStringTag property of `Intl.DateTimeFormat.prototype` was set to *"Object"*. In 8<sup>th</sup> Edition, @@toStringTag is set to *"Intl.DateTimeFormat"*.
+      <emu-xref href="#sec-intl.datetimeformat.prototype-%symbol.tostringtag%"></emu-xref> In ECMA-402, 7<sup>th</sup> Edition, the %Symbol.toStringTag% property of `Intl.DateTimeFormat.prototype` was set to *"Object"*. In 8<sup>th</sup> Edition, %Symbol.toStringTag% is set to *"Intl.DateTimeFormat"*.
     </li>
     <li>
-      <emu-xref href="#sec-intl.numberformat.prototype-@@tostringtag"></emu-xref> In ECMA-402, 7<sup>th</sup> Edition, the @@toStringTag property of `Intl.NumberFormat.prototype` was set to *"Object"*. In 8<sup>th</sup> Edition, @@toStringTag is set to *"Intl.NumberFormat"*.
+      <emu-xref href="#sec-intl.numberformat.prototype-%symbol.tostringtag%"></emu-xref> In ECMA-402, 7<sup>th</sup> Edition, the %Symbol.toStringTag% property of `Intl.NumberFormat.prototype` was set to *"Object"*. In 8<sup>th</sup> Edition, %Symbol.toStringTag% is set to *"Intl.NumberFormat"*.
     </li>
     <li>
-      <emu-xref href="#sec-intl.pluralrules.prototype-tostringtag"></emu-xref> In ECMA-402, 7<sup>th</sup> Edition, the @@toStringTag property of `Intl.PluralRules.prototype` was set to *"Object"*. In 8<sup>th</sup> Edition, @@toStringTag is set to *"Intl.PluralRules"*.
+      <emu-xref href="#sec-intl.pluralrules.prototype-%symbol.tostringtag%"></emu-xref> In ECMA-402, 7<sup>th</sup> Edition, the %Symbol.toStringTag% property of `Intl.PluralRules.prototype` was set to *"Object"*. In 8<sup>th</sup> Edition, %Symbol.toStringTag% is set to *"Intl.PluralRules"*.
     </li>
     <li>
-      <emu-xref href="#sec-Intl-toStringTag"></emu-xref> In ECMA-402, 7<sup>th</sup> Edition, the @@toStringTag property of `Intl` was not defined. In 8<sup>th</sup> Edition, @@toStringTag is set to *"Intl"*.
+      <emu-xref href="#sec-intl-%symbol.tostringtag%"></emu-xref> In ECMA-402, 7<sup>th</sup> Edition, the %Symbol.toStringTag% property of `Intl` was not defined. In 8<sup>th</sup> Edition, %Symbol.toStringTag% is set to *"Intl"*.
     </li>
     <li>
       <emu-xref href="#sec-intl-numberformat-constructor"></emu-xref> In ECMA-402, 8<sup>th</sup> Edition, the NumberFormat constructor used to throw an error when style is *"currency"* and maximumFractionDigits was set to a value lower than the default fractional digits for that currency. This behaviour was corrected in the 9<sup>th</sup> edition, and it no longer throws an error.

spec/collator.html

@@ -144,11 +144,11 @@ <h1>Intl.Collator.prototype.constructor</h1>
       </p>
     </emu-clause>
 
-    <emu-clause id="sec-intl.collator.prototype-@@tostringtag">
-      <h1>Intl.Collator.prototype [ @@toStringTag ]</h1>
+    <emu-clause id="sec-intl.collator.prototype-%symbol.tostringtag%" oldids="sec-intl.collator.prototype-@@tostringtag">
+      <h1>Intl.Collator.prototype [ %Symbol.toStringTag% ]</h1>
 
       <p>
-        The initial value of the @@toStringTag property is the String value *"Intl.Collator"*.
+        The initial value of the %Symbol.toStringTag% property is the String value *"Intl.Collator"*.
       </p>
 
       <p>