diff --git a/src/server/slavefuncs.c b/src/server/slavefuncs.c
--- a/src/server/slavefuncs.c
+++ b/src/server/slavefuncs.c
@@ -91,7 +91,10 @@ int sendExtSignal(struct remoteio *rem, 
 
 
 /**
- utility function for XPath-ish stuff:
+   Grabs the xml DOM node reached by an XPath.
+
+   @param path an XPath that lead to DOM node
+   @return the first node associated with the path or NULL if there is no match
  */
 xmlNodePtr xml_quickxpath(xmlXPathContextPtr xpathctxt, xmlChar *path)
 {