getting closer to full port of web app starter

site/doc/pages/unit_render.txt

@@ -0,0 +1,22 @@
+:sig
+void unit_render(String file_name)
+void unit_render(String file_name, Request& context)
+
+:params
+file_name : UCE file to load and execute
+context : optional request context to pass into the target page
+
+:desc
+Calls another UCE file and executes its `RENDER(Request& context)` function.
+
+If `context` is omitted, the current active request context is used.
+
+:Example
+// call a common page template
+unit_render("page-template.uce");
+
+// explicitly pass a request context
+unit_render("page-template.uce", context);
+
+:see
+>ob