Editorial: minor nits, mainly around headers

fetch.bs

@@ -795,8 +795,7 @@ directly. Use <a for="header list">get, decode, and split</a> instead.
  <a for=header>value</a> of the first such <a for=/>header</a> to <var>value</var> and
  <a for=list>remove</a> the others.
 
- <li><p>Otherwise, <a for=list>append</a> <a for=/>header</a> (<var>name</var>, <var>value</var>) to
- <var>list</var>.
+ <li><p>Otherwise, <a for=list>append</a> (<var>name</var>, <var>value</var>) to <var>list</var>.
 </ol>
 
 <p>To <dfn export for="header list" id=concept-header-list-combine>combine</dfn> a
@@ -841,7 +840,7 @@ a <a for=/>header list</a> <var>list</var>, run these steps:
  of the <a for=/>headers</a> in <var>list</var>.
 
  <li>
-  <p><a for=list>For each</a> <var>name</var> in <var>names</var>:
+  <p><a for=list>For each</a> <var>name</var> of <var>names</var>:
 
   <ol>
    <li><p>Let <var>value</var> be the result of <a for="header list">getting</a> <var>name</var>
@@ -1117,7 +1116,7 @@ is a <a>byte-case-insensitive</a> match for one of
    <li><p>Let <var>parsedValues</var> be the result of
    <a for="header value">getting, decoding, and splitting</a> <var>value</var>.
 
-   <li><p><a for=list>For each</a> <var>method</var> in <var>parsedValues</var>: if the
+   <li><p><a for=list>For each</a> <var>method</var> of <var>parsedValues</var>: if the
    <a>isomorphic encoding</a> of <var>method</var> is a <a>forbidden method</a>, then return true.
   </ol>
 
@@ -2077,7 +2076,7 @@ return true:
  <li><p>Let <var>lastURL</var> be null.
 
  <li>
-  <p><a for=list>For each</a> <var>url</var> in <var>request</var>'s <a for=request>URL list</a>:
+  <p><a for=list>For each</a> <var>url</var> of <var>request</var>'s <a for=request>URL list</a>:
 
   <ol>
    <li><p>If <var>lastURL</var> is null, then set <var>lastURL</var> to <var>url</var> and
@@ -4437,7 +4436,7 @@ steps:
   <p>If <var>response</var>'s <a for=response>type</a> is "<code>opaque</code>",
   <var>internalResponse</var>'s <a for=response>status</a> is 206, <var>internalResponse</var>'s
   <a for=response>range-requested flag</a> is set, and <var>request</var>'s
-  <a for=request>header list</a> does not <a for="header list">contain</a> `<code>Range</code>`,
+  <a for=request>header list</a> <a for="header list">does not contain</a> `<code>Range</code>`,
   then set <var>response</var> and <var>internalResponse</var> to a <a>network error</a>.
 
   <div class=note>
@@ -5156,7 +5155,7 @@ run these steps:
      and <a>done flag</a> is unset.
 
      <li>
-      <p><a for=set>For each</a> <var>fetchRecord</var> in <var>inflightRecords</var>:
+      <p><a for=set>For each</a> <var>fetchRecord</var> of <var>inflightRecords</var>:
 
       <ol>
        <li><p>Let <var>inflightRequest</var> be <var>fetchRecord</var>'s
@@ -6026,7 +6025,7 @@ number of these <a lt="CORS-preflight fetch">fetches</a>.
    <a>byte-case-insensitive</a> match for an <a for=list>item</a> in <var>headerNames</var>, then
    return a <a>network error</a>.
 
-   <li><p><a for=list>For each</a> <var>unsafeName</var> in the
+   <li><p><a for=list>For each</a> <var>unsafeName</var> of the
    <a>CORS-unsafe request-header names</a> with <var>request</var>'s
    <a for=request>header list</a>, if <var>unsafeName</var> is not a <a>byte-case-insensitive</a>
    match for an <a for=list>item</a> in <var>headerNames</var> and <var>request</var>'s
@@ -6443,19 +6442,18 @@ new Headers(meta2);
 
 <ol>
  <li>
-  <p>If <var>object</var> is a <a>sequence</a>, then <a for=list>for each</a> <var>header</var> in
+  <p>If <var>object</var> is a <a>sequence</a>, then <a for=list>for each</a> <var>header</var> of
   <var>object</var>:
 
   <ol>
-   <li><p>If <var>header</var> does not contain exactly two items, then <a>throw</a> a
-   {{TypeError}}.
+   <li><p>If <var>header</var>'s <a for=list>size</a> is not 2, then <a>throw</a> a {{TypeError}}.
 
-   <li><p><a for=Headers>Append</a> (<var>header</var>'s first item, <var>header</var>'s
-   second item) to <var>headers</var>.
+   <li><p><a for=Headers>Append</a> (<var>header</var>[0], <var>header</var>[1]) to
+   <var>headers</var>.
   </ol>
 
  <li><p>Otherwise, <var>object</var> is a <a for=/>record</a>, then <a for=map>for each</a>
- <var>key</var> → <var>value</var> in <var>object</var>, <a for=Headers>append</a> (<var>key</var>,
+ <var>key</var> → <var>value</var> of <var>object</var>, <a for=Headers>append</a> (<var>key</var>,
  <var>value</var>) to <var>headers</var>.
 </ol>
 
@@ -6510,7 +6508,7 @@ method steps are to <a for=Headers>append</a> (<var>name</var>, <var>value</var>
  <li><p>Otherwise, if <a>this</a>'s <a for=Headers>guard</a> is "<code>response</code>" and
  <var>name</var> is a <a>forbidden response-header name</a>, return.
 
- <li><p>If <a>this</a>'s <a for=Headers>header list</a> does not <a for="header list">contain</a>
+ <li><p>If <a>this</a>'s <a for=Headers>header list</a> <a for="header list">does not contain</a>
  <var>name</var>, then return.
 
  <li><p><a for="header list">Delete</a> <var>name</var> from <a>this</a>'s
@@ -7436,9 +7434,8 @@ constructor steps are:
    <li><p>Empty <a>this</a>'s <a for=Request>headers</a>'s <a for=Headers>header list</a>.
 
    <li><p>If <var>headers</var> is a {{Headers}} object, then <a for=list>for each</a>
-   <var>header</var> in its <a for=Headers>header list</a>, <a for=Headers>append</a>
-   (<var>header</var>'s <a for=header>name</a>, <var>header</var>'s <a for=header>value</a>) to
-   <a>this</a>'s <a for=Request>headers</a>.
+   <var>header</var> of its <a for=Headers>header list</a>, <a for=Headers>append</a>
+   <var>header</var> to <a>this</a>'s <a for=Request>headers</a>.
 
    <li><p>Otherwise, <a for=Headers>fill</a> <a>this</a>'s <a for=Request>headers</a> with
    <var>headers</var>.