Add dfns for resizable ABs and growable SABs

Author: syg

spec.html

@@ -42616,6 +42616,13 @@ <h1>Notation</h1>
       </emu-note>
     </emu-clause>
 
+    <emu-clause id="sec-fixed-length-and-resizable-arraybuffer-objects">
+      <h1>Fixed-length and Resizable ArrayBuffer Objects</h1>
+      <p>A <dfn>fixed-length ArrayBuffer</dfn> is an ArrayBuffer whose byte length cannot change after creation.</p>
+      <p>A <dfn>resizable ArrayBuffer</dfn> is an ArrayBuffer whose byte length may change after creation via calls to <emu-xref href="#sec-arraybuffer.prototype.resize" title></emu-xref>.</p>
+      <p>The kind of ArrayBuffer object that is created depends on the arguments passed to <emu-xref href="#sec-arraybuffer-length" title></emu-xref>.</p>
+    </emu-clause>
+
     <emu-clause id="sec-abstract-operations-for-arraybuffer-objects">
       <h1>Abstract Operations For ArrayBuffer Objects</h1>
 
@@ -43236,6 +43243,13 @@ <h1>Resizable ArrayBuffer Guidelines</h1>
   <emu-clause id="sec-sharedarraybuffer-objects">
     <h1>SharedArrayBuffer Objects</h1>
 
+    <emu-clause id="sec-fixed-length-and-growable-sharedarraybuffer-objects">
+      <h1>Fixed-length and Growable SharedArrayBuffer Objects</h1>
+      <p>A <dfn>fixed-length SharedArrayBuffer</dfn> is a SharedArrayBuffer whose byte length cannot change after creation.</p>
+      <p>A <dfn>growable SharedArrayBuffer</dfn> is a SharedArshrayBuffer whose byte length may increase after creation via calls to <emu-xref href="#sec-sharedarraybuffer.prototype.grow" title></emu-xref>.</p>
+      <p>The kind of SharedArrayBuffer object that is created depends on the arguments passed to <emu-xref href="#sec-sharedarraybuffer-length" title></emu-xref>.</p>
+    </emu-clause>
+
     <emu-clause id="sec-abstract-operations-for-sharedarraybuffer-objects">
       <h1>Abstract Operations for SharedArrayBuffer Objects</h1>