Create TODO page for pages tag

See #172

Author: philwareham

tags/pages.md

@@ -0,0 +1,42 @@
+---
+layout: document
+category: Tags
+published: true
+title: Pages
+description: TODO.
+tags:
+  - Markup tags
+---
+
+# Page url
+
+**On this page**:
+
+* Table of contents
+{:toc}
+
+## Syntax
+
+~~~ html
+<txp:item />
+~~~
+
+TODO.
+
+## Attributes
+
+TODO.
+
+### Common presentational attributes
+
+TODO.
+
+## Examples
+
+TODO.
+
+## Genealogy
+
+### Version 4.8.0
+
+Tag support added.