Index: source
===================================================================
--- source	(revision 1583)
+++ source	(revision 1584)
@@ -4607,8 +4607,9 @@
   the <code title="lang">lang</code> attribute represents the language
   of the content.</p>
 
-  <p>Authors must only use elements, attributes, and attribute values
-  for their appropriate semantic purposes.</p>
+  <p>Authors must not use elements, attributes, and attribute values
+  for purposes other than their appropriate intended semantic
+  purpose.</p>
 
   <div class="example">
    <p>For example, the following document is non-conforming, despite
@@ -4690,8 +4691,7 @@
   <p>All the elements in this specification have a defined content
   model, which describes what nodes are allowed inside the elements,
   and thus what the structure of an HTML document or fragment must
-  look like. Authors must only put elements inside an element if that
-  element allows them to be there according to its content model.</p>
+  look like.</p>
 
   <p class="note">As noted in the conformance and terminology
   sections, for the purposes of determining if an element matches its
@@ -4964,10 +4964,10 @@
   model that must be satisfied.</p>
 
   <p>When a content model includes a part that is "transparent", those
-  parts must only contain content that would still be conformant if
-  all transparent and semi-transparent elements in the tree were
-  replaced, in their parent element, by the children in the
-  "transparent" part of their content model, retaining order.</p>
+  parts must not contain content that would not be conformant if all
+  transparent and semi-transparent elements in the tree were replaced,
+  in their parent element, by the children in the "transparent" part
+  of their content model, retaining order.</p>
 
   <p>When a transparent or semi-transparent element has no parent,
   then the part of its content model that is "transparent" must
@@ -6149,9 +6149,9 @@
 
   <p>However, if the link is an <span>external resource link</span>,
   then the <code title="attr-link-media">media</code> attribute is
-  prescriptive. The user agent must only apply the external resource
-  to <span>views</span><!-- XXX xref --> while their state match the
-  listed media.</p>
+  prescriptive. The user agent must apply the external resource to
+  <span>views</span><!-- XXX xref --> while their state match the
+  listed media, and must not apply them otherwise.</p>
 
   <p id="default-media">The default, if the <code
   title="attr-link-media">media</code> attribute is omitted, is
@@ -6937,8 +6937,8 @@
   <p>The <dfn title="attr-style-media"><code>media</code></dfn>
   attribute says which media the styles apply to. The value must be a
   valid <a href="#mq">media query</a>. <a href="#refsMQ">[MQ]</a> User
-  agents must only apply the styles to <span>views</span> while their
-  state match the listed media. <a
+  agents must apply the styles to <span>views</span> while their state
+  match the listed media, and must not apply them otherwise. <a
   href="#refsDOM3VIEWS">[DOM3VIEWS]</a></p>
 
   <p id="style-default-media">The default, if the <code
@@ -6948,9 +6948,9 @@
 
   <p>The <dfn title="attr-style-scoped"><code>scoped</code></dfn>
   attribute is a <span>boolean attribute</span>. If the attribute is
-  present, then the user agent must only apply the specified style
-  information to the <code>style</code> element's parent element (if
-  any), and that element's child nodes. Otherwise, the specified
+  present, then the user agent must apply the specified style
+  information only to the <code>style</code> element's parent element
+  (if any), and that element's child nodes. Otherwise, the specified
   styles must, if applied, be applied to the entire document.</p>
 
   <p>If the <code title="attr-style-scoped">scoped</code> attribute is
@@ -8121,7 +8121,7 @@
   <code>br</code> elements must not be considered part of the
   surrounding text.</p>
 
-  <p><code>br</code> elements must only be used for line breaks that
+  <p><code>br</code> elements must be used only for line breaks that
   are actually part of the content, as in poems or addresses.</p>
 
   <div class="example">
@@ -9599,7 +9599,7 @@
   <!-- XXX that means <dfn>x \n x</dfn> won't match <span>x x</span> -->
 
   <p>If the <code title="attr-dfn-title">title</code> attribute of the
-  <code>dfn</code> element is present, then it must only contain the
+  <code>dfn</code> element is present, then it must contain only the
   term being defined.</p>
 
   <p class="note">The <code title="attr-title">title</code> attribute
@@ -10642,7 +10642,7 @@
   <p>The <code>sup</code> element represents a superscript and the
   <code>sub</code> element represents a subscript.</p>
 
-  <p>These elements must only be used to mark up typographical
+  <p>These elements must be used only to mark up typographical
   conventions with specific meanings, not for typographical
   presentation for presentation's sake. For example, it would be
   inappropriate for the <code>sub</code> and <code>sup</code> elements
@@ -13534,9 +13534,9 @@
     resource (within the constraints put forward by this and other
     specifications); for example, reconnecting to the server in the
     face of network errors, using HTTP partial range requests, or
-    switching to a streaming protocol. The user agent must only
-    consider a resource erroneous if it has given up trying to
-    download it.</p>
+    switching to a streaming protocol. The user agent must consider a
+    resource erroneous only if it has given up trying to download
+    it.</p>
 
     <dl class="switch">
 
@@ -15690,7 +15690,7 @@
   </dl>
 
   <p>These values are all case-sensitive &mdash; they must be used
-  exactly as shown. User agents must only recognise values that
+  exactly as shown. User agents must not recognise values that do not
   exactly match the values given above.</p>
 
   <p>The operators in the above list must be treated as described by
@@ -15917,7 +15917,7 @@
   color of the last offset, and areas outside the cone untouched by
   the gradient (transparent black).</p>
 
-  <p>Gradients must only be painted where the relevant stroking or
+  <p>Gradients must be painted only where the relevant stroking or
   filling effects requires that they be drawn.</p>
 
 <!--
@@ -15982,7 +15982,7 @@
   four directions all over the canvas (if the <code>repeat</code>
   string was specified). The images are not scaled by this process;
   one CSS pixel of the image must be painted on one coordinate space
-  unit. Of course, patterns must only actually painted where the
+  unit. Of course, patterns must actually be painted only where the
   stroking or filling effect requires that they be drawn, and are
   affected by the current transformation matrix.</p>
 
@@ -22863,8 +22863,8 @@
   cell's row as the first argument, the cell's column index as the
   second, and the checkbox's new state as the third. The state should
   be represented by the number 1 if the new state is checked, 0 if the
-  new state is unchecked, and &#x2212;1 if the new state is indeterminate
-  (which must only be possible if the cell has the <code
+  new state is unchecked, and &#x2212;1 if the new state is
+  indeterminate (which must be possible only if the cell has the <code
   title="datagrid-cell-class-indeterminate">indeterminate</code> class
   set). The <code>datagrid</code> must act as if the
   <code>datagrid</code>'s <code
@@ -22983,8 +22983,8 @@
   title="attr-datagrid-multiple"><code>multiple</code></dfn>
   attribute, then the user must be able to select any number of rows
   (zero or more). If the attribute is not present, then the user must
-  only be able to select a single row at a time, and selecting another
-  one must unselect all the other rows.</p>
+  not be able to select more than a single row at a time, and
+  selecting another one must unselect all the other rows.</p>
 
   <p class="note">This only applies to the user. Scripts can select
   multiple rows even when the <code
@@ -31889,7 +31889,7 @@
   the linked resource. It is purely advisory. The value must be a
   valid RFC 3066 language code. <a href="#refsRFC3066">[RFC3066]</a>
   User agents must not consider this attribute authoritative &mdash;
-  upon fetching the resource, user agents must only use language
+  upon fetching the resource, user agents must use only language
   information associated with the resource to determine its language,
   not metadata included in the link to the resource.</p>
 
@@ -34677,9 +34677,9 @@
   document to a second document, crossing a hostile third document in
   the process, the hostile document could intercept the data.</p>
 
-  <p>For the same reason, user agents must only consider a drop to be
-  successful if the user specifically ended the drag operation &mdash;
-  if any scripts end the drag operation, it must be considered
+  <p>For the same reason, user agents must consider a drop to be
+  successful only if the user specifically ended the drag operation
+  &mdash; if any scripts end the drag operation, it must be considered
   unsuccessful (canceled) and the <code title="event-drop">drop</code>
   event must not be fired.</p>
 
@@ -35855,7 +35855,7 @@
   must remove the URI specified in <var title="">src</var> from the
   <span title="concept-event-source-list">list of event sources</span>
   for that object.  If the same URI has been registered multiple
-  times, removing it must only remove one instance of that URI for
+  times, removing it must remove only one instance of that URI for
   each invocation of the <code
   title="removeEventSource">removeEventSource()</code> method.</p>
 
@@ -35907,7 +35907,7 @@
   caching rules.</p>
 
   <p>For HTTP connections, the <code title="">Accept</code> header may
-  be included; if included, it must only contain formats of event
+  be included; if included, it must contain only formats of event
   framing that are supported by the user agent (one of which must be
   <code>text/event-stream</code>, as described below).</p>
 
@@ -46502,7 +46502,7 @@
   menu was created should have appropriate pseudo-classes (:hover,
   :focus, :active) applied.</p>
 
-  <p>The menu items must only consider the computed styles of the
+  <p>The menu items must consider only the computed styles of the
   elements from which they were derived, not other elements.</p>
 
   <div class="example">