diff --git a/Array.js b/Array.js
index d467228..afdf0e6 100644
--- a/Array.js
+++ b/Array.js
@@ -31,22 +31,7 @@ module.STOP =
 
 // Wrap .map(..) / .filter(..) / .reduce(..) / .. to support STOP...
 // 
-// NOTE: these add almost no overhead to the iteration.
-// NOTE: these will not return a partial result if stopped.
-// 
-/*/ XXX should these return a partial result on STOP?
-// 		...use generators to do this...
-var stoppable = function(iter){
-	return function(func){
-		try {
-			return this[iter](...arguments)
-		} catch(err){
-			if(err === STOP){
-				return
-			} else if(err instanceof STOP){
-				return err.value }
-			throw err } } }
-/*/
+// NOTE: internally these are implemented as for-of loops...
 var stoppableList = function(iter){
 	return function(func){
 		return [...this.iter()[iter](...arguments)] } }
@@ -56,7 +41,6 @@ var stoppableValue = function(iter, no_return=false){
 		return no_return ?
 			undefined
 			: res } }
-//*/
 
 
 // Equivalent to .map(..) / .filter(..) / .reduce(..) that process the 
@@ -504,6 +488,7 @@ object.Mixin('ArrayProtoMixin', 'soft', {
 
 	// Stoppable iteration...
 	//
+	// NOTE: internally these are generators...
 	smap: stoppableList('map'),
 	sfilter: stoppableList('filter'),
 	sreduce: stoppableValue('reduce'),
diff --git a/generator.js b/generator.js
index 94725ab..5c69aff 100644
--- a/generator.js
+++ b/generator.js
@@ -178,6 +178,7 @@ function(func){
 var GeneratorMixin =
 module.GeneratorMixin =
 object.Mixin('GeneratorMixin', 'soft', {
+	STOP: object.STOP,
 
 	gat: makeGenerator('gat'),
 	at: function(i){
diff --git a/package.json b/package.json
index 01e9789..ec11328 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ig-types",
-  "version": "6.3.1",
+  "version": "6.3.2",
   "description": "Generic JavaScript types and type extensions...",
   "main": "main.js",
   "scripts": {