Renamed ./src/external to ./src/extensions. No code logic changes. (0.40.5)

web/documentation/extensions/xml2/xml2.md

@@ -0,0 +1,34 @@
+---
+layout: page
+published: true
+noToc: false
+noComments: false
+noDate: false
+title: Fun - XML (libxml2) extension (optional)
+subtitle: Documentation for XML (libxml2) extension (optional)
+description: Documentation for XML (libxml2) extension (optional)
+permalink: /documentation/extensions/xml2/
+lang: en
+tags:
+- extension
+- libxml2
+- optional
+- xml
+---
+
+
+- CMake option: FUN_WITH_XML2=ON
+- Purpose: Minimal XML parsing helpers using libxml2.
+- Homepage: [http://xmlsoft.org/](http://xmlsoft.org/){:class="ext"}
+
+## Opcodes:
+
+- OP_XML_PARSE: pops text; pushes doc handle (>0) or 0
+- OP_XML_ROOT: pops doc handle; pushes node handle (>0) or 0
+- OP_XML_NAME: pops node handle; pushes string (node name)
+- OP_XML_TEXT: pops node handle; pushes string (concatenated text)
+
+## Notes:
+
+- Requires libxml2 development headers/libs.
+- On many systems, the include path is `/usr/include/libxml2`.