cleanup, docs

site/doc/pages/xml_encode.txt

@@ -23,49 +23,18 @@ Try the live example in the [XML demo](../demo/xml.uce).
 
 The native element shape is:
 
-```text
-node["name"] = "book"
-node["attrs"]["id"] = "b1"
-node["text"] = "optional text"
-node["children"] = list of child element nodes
-```
 
 Example:
 
-```uce
-DValue book;
-book["name"] = "book";
-book["attrs"]["id"] = "b1";
-
-DValue title;
-title["name"] = "title";
-title["text"] = "UCE & XML";
-book["children"].push(title);
-
-String xml = xml_encode(book);
-```
 
 The result is:
 
-```xml
-<book id="b1"><title>UCE &amp; XML</title></book>
-```
 
 For simple map/list/scalar trees, `xml_encode()` creates ordinary child elements:
 
-```uce
-DValue payload;
-payload["title"] = "Hello";
-payload["count"] = "3";
-
-String xml = xml_encode(payload, "payload");
-```
 
 Result:
 
-```xml
-<payload><count>3</count><title>Hello</title></payload>
-```
 
 Notes:
 
@@ -74,3 +43,8 @@ Notes:
 - List values use repeated `<item>` children.
 - Empty elements serialize as self-closing tags.
 - Map child order follows `DValue` map iteration order.
+
+:example
+DValue value;
+value["name"] = "Ada";
+print(xml_encode(value) != "" ? "xml\n" : "empty\n");