diff --git a/index.bs b/index.bs
index f4c9988..ee6773f 100644
--- a/index.bs
+++ b/index.bs
@@ -78,16 +78,23 @@ dictionary CSSStyleSheetInit {
 	<dd>
 		When called, execute these steps:
 
-		1. Construct a new {{/CSSStyleSheet}} object |sheet| with the following properties:
-			* <a spec=cssom>location</a> set to the <a spec=html>base URL</a> of the [=associated Document=] for the [=current global object=]
-			* No <a spec=cssom>parent CSS style sheet</a>.
-			* No <a spec=cssom>owner node</a>.
-			* No <a spec=cssom>owner CSS rule</a>.
-			* <a spec=cssom>title</a> set to the {{CSSStyleSheetInit/title}} attribute of |options|.
+		1. Construct a new {{/CSSStyleSheet}} object |sheet|.
+		2. Run the steps to <a>set up a CSSStyleSheet</a> on |sheet| given |options|.
+		4. Return |sheet|.
+	</dd>
+
+	<dt>To <dfn export>set up a CSSStyleSheet</dfn></dt> on |sheet| given {{CSSStyleSheetInit}} |options|, run these steps:
+	<dd>
+		1. Set the following properties on |sheet|:
+			* Set <a spec=cssom>location</a> to the <a spec=html>base URL</a> of the [=associated Document=] for the [=current global object=]
+			* Set <a spec=cssom>parent CSS style sheet</a> to null.
+			* Set <a spec=cssom>owner node</a> to null.
+			* Set <a spec=cssom>owner CSS rule</a> to null.
+			* Set <a spec=cssom>title</a> to the {{CSSStyleSheetInit/title}} attribute of |options|.
 			* Set <a spec=cssom>alternate flag</a> if the {{CSSStyleSheetInit/alternate}} attribute of |options| is true, otherwise unset the <a spec=cssom>alternate flag</a>.
 			* Set <a spec=cssom>origin-clean flag</a>.
 			* Set [=constructed flag=].
-			* [=Constructor document=] set to the [=associated Document=] for the [=current global object=].
+			* Set [=Constructor document=] to the [=associated Document=] for the [=current global object=].
 		2. If the {{CSSStyleSheetInit/media}} attribute of |options| is a string,
 			<a>create a MediaList object</a> from the string
 			and assign it as |sheet|'s <a spec=cssom>media</a>.
@@ -95,7 +102,6 @@ dictionary CSSStyleSheetInit {
 			from the resulting string and set it as |sheet|'s <a spec=cssom>media</a>.
 		3. If the {{CSSStyleSheetInit/disabled}} attribute of |options| is true,
 			set |sheet|'s <a spec=cssom>disabled flag</a>.
-		4. Return |sheet|.
 	</dd>
 </dl>
 
@@ -176,10 +182,15 @@ Note that we're explicitly monkeypatching CSSOM. We are working on [merging this
 	<dd>
 		When called, execute these steps:
     	1. Let |sheet| be this {{/CSSStyleSheet}} object.
-		2. If |sheet|'s [=constructed flag=] is not set, or |sheet|'s [=disallow modification flag=] is set, throw a "{{NotAllowedError}}" {{DOMException}}.
-		3. Let |rules| be the result of running [=parse a list of rules=] from |text|. If |rules| is not a list of rules (i.e. an error occurred during parsing), set |rules| to an empty list.
-		4. If |rules| contains one or more <a>@import</a> rules, throw a "{{NotAllowedError}}" {{DOMException}}.
-		5. Set |sheet|'s [=CSS rules=] to |rules|.
+		2. Run the steps to <a>synchronously replace the rules of a CSSStyleSheet</a> on |sheet| given |text|.
+	</dd>
+
+	<dt>To <dfn export>synchronously replace the rules of a CSSStyleSheet</dfn></dt> on |sheet| given |text|, run these steps:
+	<dd>
+		1. If |sheet|'s [=constructed flag=] is not set, or |sheet|'s [=disallow modification flag=] is set, throw a "{{NotAllowedError}}" {{DOMException}}.
+		2. Let |rules| be the result of running [=parse a list of rules=] from |text|. If |rules| is not a list of rules (i.e. an error occurred during parsing), set |rules| to an empty list.
+		3. If |rules| contains one or more <a>@import</a> rules, throw a "{{NotAllowedError}}" {{DOMException}}.
+		4. Set |sheet|'s [=CSS rules=] to |rules|.
 	</dd>
 
 </dl>