diff --git a/src/commandline.js b/src/commandline.js
index f14b88b8..7d57bc56 100644
--- a/src/commandline.js
+++ b/src/commandline.js
@@ -122,7 +122,6 @@ function OptionParser(method, options) {
   this.options = options;
 
   this.supportedMap = this.getMasterOptionMap()[method];
-  this.unsupportedOptions = [];
 
   if (this.supportedMap === undefined) {
     throw new Error('No option map for ' + method);
@@ -167,7 +166,8 @@ OptionParser.prototype.explodeAndSet = function() {
     if (this.supportedMap[option] !== undefined) {
       this.supportedMap[option] = true;
     } else {
-      this.unsupportedOptions.push(option);
+      // this option is not supported
+      throw new CommandProcessError('The option "' + option + '" is not supported');
     }
   }, this);
   // done!
diff --git a/src/git.js b/src/git.js
index 15b58ce3..f648657e 100644
--- a/src/git.js
+++ b/src/git.js
@@ -206,8 +206,11 @@ GitEngine.prototype.numBackFrom = function(commit, numBack) {
 };
 
 GitEngine.prototype.checkout = function(idOrTarget) {
+  console.log('the target', idOrTarget);
   var target = this.resolveId(idOrTarget);
+  console.log(target);
   if (target.get('id') === 'HEAD') {
+    // git checkout HEAD is a
     // meaningless command but i used to do this back in the day
     return;
   }
@@ -253,6 +256,7 @@ GitEngine.prototype.deleteBranch = function(name) {
 
 GitEngine.prototype.dispatch = function(commandObj) {
   // TODO: parse arguments as well
+  console.log(commandObj);
   this[commandObj.method](); 
 };
 
@@ -333,12 +337,11 @@ var Commit = Backbone.Model.extend({
   },
 
   addNodeToVisuals: function() {
-    // TODO: arbor stuff
-    // this.set('node', sys.addNode(this.get('id')));
+    this.set('arborNode', sys.addNode(this.get('id')));
   },
 
   addEdgeToVisuals: function(parent) {
-
+    sys.addEdge(this.get('arborNode'), parent.get('arborNode'));
   },
 
   initialize: function() {
diff --git a/src/style/main.css b/src/style/main.css
index df585acc..892f16c8 100644
--- a/src/style/main.css
+++ b/src/style/main.css
@@ -39,7 +39,7 @@ p.commandResult {
   color: blue;
 }
 
-p.commandError {
+p.commandError, p.errorResult {
   color: red;
 }