diff --git a/package.json b/package.json
index 6cd733dd..37268881 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "jssm",
-  "version": "0.17.1",
+  "version": "0.18.0",
   "description": "A Javascript state machine with a simple API. Well tested, and typed with Flowtype. MIT License.",
   "main": "dist/jssm.es5.browserified.js",
   "scripts": {
@@ -26,9 +26,11 @@
   },
   "keywords": [
     "state",
+    "state machine",
     "state-machine",
     "machine",
     "finite-state-machine",
+    "finite state machine",
     "fsm",
     "fsm-library",
     "js",
diff --git a/src/js/jssm-types.js b/src/js/jssm-types.js
index cf3402f4..8b85871e 100644
--- a/src/js/jssm-types.js
+++ b/src/js/jssm-types.js
@@ -80,7 +80,7 @@ type JssmTransition<NT, DT> = {
     from         : NT,
     to           : NT,
     name?        : string,
-    action?      : string,
+    action?      : NT,
     check?       : JssmTransitionPermitterMaybeArray<NT, DT>,  // validate this edge's transition; usually about data
     probability? : number,                                     // for stoch modelling, would like to constrain to [0..1], dunno how
     usual?       : ''                                          // most common exit, for graphing; likelihood overrides
diff --git a/src/js/jssm.js b/src/js/jssm.js
index 82c3dbc7..9aa98d1d 100644
--- a/src/js/jssm.js
+++ b/src/js/jssm.js
@@ -265,9 +265,18 @@ todo comeback
 
   action_exits_at(whichState : mNT) : Array<mNT> {
     return [... (this._reverse_actions.get(whichState) || new Map()).values()] // wasteful
-           .map( (edgeId:number) => this._edges[edgeId] ) // whargarbl burn out any
-           .filter( o => o.from === whichState)
-           .map( filtered => filtered.to );
+           .map    ( (edgeId:number)              => this._edges[edgeId]   )
+           .filter ( (o:JssmTransition<mNT, mDT>) => o.from === whichState )
+           .map    ( filtered                     => filtered.action       );
+  }
+
+  probable_action_exits_at(whichState : mNT) : Array<mNT> {
+    return [... (this._reverse_actions.get(whichState) || new Map()).values()] // wasteful
+           .map    ( (edgeId:number)              => this._edges[edgeId]   )
+           .filter ( (o:JssmTransition<mNT, mDT>) => o.from === whichState )
+           .map    ( filtered                     => ( { action      : filtered.action,
+                                                         probability : filtered.probability } )
+                                                     );
   }