diff --git a/docs/cookbook.md b/docs/cookbook.md
index 0c8641c..1841bd1 100644
--- a/docs/cookbook.md
+++ b/docs/cookbook.md
@@ -663,9 +663,9 @@ Image Magic
 
 The [`-prince-image-magic`](css-props.md#prop-prince-image-magic) property performs various image-related, Prince-specific tasks that do not fit into other existing CSS properties. It applies magic to images!
 
-To reduce the PDF file size, JPEG images can be recompressed at a lower quality level by using the function `recompress-jpeg(quality%)` with the required quality percentage as argument.
+To reduce the PDF file size, JPEG images can be recompressed at a lower quality level by using the function <code>recompress-jpeg( &lt;<i>quality%</i>&gt; )</code> with the required quality percentage as argument.
 
-PNG images can be converted to JPEG images with the keyword `convert-to-jpeg` (using the default compression rate), or they can also be converted to JPEG with the required compression rate as argument with the function `convert-to-jpeg(quality%)`.
+PNG images can be converted to JPEG images with the keyword `convert-to-jpeg` (using the default compression rate), or they can also be converted to JPEG with the required compression rate as argument with the function <code>convert-to-jpeg( &lt;<i>quality%</i>&gt; )</code>.
 
 Prince usually strips unnecessary metadata from JPEG images to help contain size. But it might happen that you need that extra data, possibly for further downstream processing. The keyword `jpeg-verbatim` inhibtis this stripping and includes the images without modification in the PDF file.
 
diff --git a/website/properties/properties.xml b/website/properties/properties.xml
index 42e2f8f..0889421 100644
--- a/website/properties/properties.xml
+++ b/website/properties/properties.xml
@@ -4943,12 +4943,12 @@ supplier, item { overflow-wrap: normal; }
     embedded in the PDF file.
     </p>
     <p>
-    When <code>recompress-jpeg(quality%)</code> is specified for this property, Prince
+    When <code>recompress-jpeg( &lt;<i>quality%</i>&gt; )</code> is specified for this property, Prince
     will recompress JPEG images to the specified percentage to save space when
     embedding them in the PDF output.
     </p>
     <p>
-    The <code>convert-to-jpeg</code> keyword or the <code>convert-to-jpeg(quality%)</code>
+    The <code>convert-to-jpeg</code> keyword or the <code>convert-to-jpeg( &lt;<i>quality%</i>&gt; )</code>
     function convert non-JPEG images to JPEG, so that they take less space (but may look blurry).
     </p>
     <p class="note">
diff --git a/website/properties/schema.rnc b/website/properties/schema.rnc
index 68ca5cd..629b188 100644
--- a/website/properties/schema.rnc
+++ b/website/properties/schema.rnc
@@ -154,11 +154,12 @@ html-list-item =
     element li { html-inline* }
 
 html-phrase = element em { html-text } |
+    element i { html-text } |
     element strong { html-text } |
     element sup { attribute style { text }, html-text }
 
 html-text =
-    element code { html-text } |
+    element code { html-inline* } |
     text
 
 reference =