diff --git a/argv.js b/argv.js
index 4e885b2..53ff6ee 100644
--- a/argv.js
+++ b/argv.js
@@ -433,6 +433,7 @@ object.Constructor('Parser', {
 
 
 	// instance stuff...
+	//
 	// XXX do we need all three???
 	script: null,
 	scriptNmae: null,
@@ -443,6 +444,13 @@ object.Constructor('Parser', {
 	unhandled: null,
 	value: null,
 
+	// NOTE: this is dynamically set by the parent each time a nested 
+	// 		parser is triggered, so when reusing parsers in multiple 
+	// 		locations cuncurently it is recommended to create single-use
+	// 		instances for each context...
+	parent: false,
+
+
 
 	// Handler iterators...
 	//