diff --git a/doxy/node/docgen.js b/doxy/node/docgen.js
index ecf190c4..305cec39 100644
--- a/doxy/node/docgen.js
+++ b/doxy/node/docgen.js
@@ -43,20 +43,17 @@ opts
 
 // use promise-style programming rather than spaghetti callbacks
 Promise.promisifyAll(fs);
-
-
-// TODO: create directory structure if doesn't exist
-var formats = opts.formats.split(',');
-formats.forEach(function(format){
-  mkdirp('jsdoc/' + format + '/' + opts.module);
-});
+Promise.promisifyAll(mkdirp);
 
 
 // main
 xml2js.parse().then(function(specjs) {
+  var formats = opts.formats.split(',');
   Promise.all(_.map(formats, function(format) {
     var generateDocs = require(__dirname + '/generators/' + format + '/generator');
-    var outFile = opts.outdir + '/' + format + '/' + specjs.MODULE + '/doc.js';
-    return fs.writeFileAsync(outFile, generateDocs(specjs));
+    var dir = opts.outdir + '/' + format + '/' + specjs.MODULE;
+    return mkdirp.mkdirpAsync(dir).then(function() {
+      return fs.writeFileAsync(dir + '/doc.js', generateDocs(specjs));
+    });
   }));
 });
diff --git a/doxy/node/generators/jsdoc/generator.js b/doxy/node/generators/jsdoc/generator.js
index 81cce67a..6dd3d7dc 100644
--- a/doxy/node/generators/jsdoc/generator.js
+++ b/doxy/node/generators/jsdoc/generator.js
@@ -58,6 +58,7 @@ function GENERATE_MODULE(module) {
 
 // generate method spec with parent module/class
 function GENERATE_METHOD(name, spec, parent) {
+  name = name.replace(/!+$/, '');
   return GENERATE_DOC(spec.description + '\n'
     + '@method ' + name + '\n'
     + '@instance\n'
diff --git a/doxy/node/generators/ternjs/generator.js b/doxy/node/generators/ternjs/generator.js
index 7bbc0a00..2378fe1f 100644
--- a/doxy/node/generators/ternjs/generator.js
+++ b/doxy/node/generators/ternjs/generator.js
@@ -28,44 +28,66 @@ var _ = require('lodash');
 
 // generate json for ternjs input
 function generateDocs(specjs) {
-  var docs = GENERATE_MODULE(specjs.MODULE);
   GENERATE_TYPE = (function(enums) {
     return function(type) {
       return (_.contains(enums, type) ? ('Enum ' + type) : type);
     }
   })(_.keys(specjs.ENUMS_BY_GROUP));
+  var docs = { '!name': specjs.MODULE + 'library' };
+  _.extend(docs, GENERATE_MODULE(specjs.MODULE));
   _.each(specjs.ENUMS, function(enumSpec, enumName) {
     _.extend(docs[specjs.MODULE], GENERATE_ENUM(enumName, enumSpec));
   });
   _.each(specjs.METHODS, function(methodSpec, methodName) {
     _.extend(docs[specjs.MODULE], GENERATE_METHOD(methodName, methodSpec));
   });
-  _.each(specjs.CLASSES, function(classSpec, parentClass) {
-    var constructor =  classSpec.methods[parentClass];
-    _.extend(docs[specjs.MODULE], GENERATE_METHOD(parentClass, constructor ? constructor : { params: {}, return: {}, description: '' } ));
-    _.each(classSpec.enums, function(enumSpec, enumName) {
-      _.extend(docs[specjs.MODULE][parentClass], GENERATE_ENUM(enumName, enumSpec));
+  
+  if (_.isEmpty(specjs.CLASSGROUPS)) {
+    _.extend(docs[specjs.MODULE], GENERATE_CLASSES(specjs.CLASSES));
+  } else {
+    var grouped = _.flatten(_.pluck(_.values(specjs.CLASSGROUPS), 'classes'));
+    var ungrouped = _.difference(_.keys(specjs.CLASSES), grouped);
+    _.extend(docs[specjs.MODULE], GENERATE_CLASSES(_.pick(specjs.CLASSES, ungrouped)));
+    _.each(specjs.CLASSGROUPS, function(groupSpec, groupName) {
+      _.extend(docs, GENERATE_MODULE(groupName));
+      _.extend(docs[groupName], GENERATE_CLASSES(_.pick(specjs.CLASSES, groupSpec.classes), groupName));
     });
-    docs[specjs.MODULE][parentClass].prototype = {};
-    _.each(_.omit(classSpec.methods, parentClass), function(methodSpec, methodName) {
-      _.extend(docs[specjs.MODULE][parentClass].prototype, GENERATE_METHOD(methodName, methodSpec));
-    });
-    _.each(classSpec.variables, function(variableSpec, variableName) {
-      _.extend(docs[specjs.MODULE][parentClass].prototype, GENERATE_VARIABLE(variableName, variableSpec));
-    });
-  });
+  }
   return JSON.stringify(docs, null, 2);
 }
 
 
 // generate module spec
 function GENERATE_MODULE(module) {
-  var docs = { '!name': module + 'library' };
+  var docs = {};
   docs[module] = {};
   return docs;
 }
 
 
+// generate the spec for the given list of classes
+function GENERATE_CLASSES(classes) {
+  var docs = {};
+  _.each(classes, function(classSpec, parentClass) {
+    var constructor =  classSpec.methods[parentClass];
+    _.extend(docs, GENERATE_METHOD(parentClass, constructor ? constructor : { params: {}, return: {}, description: '' } ));
+    if (_.has(docs, parentClass)) {
+      _.each(classSpec.enums, function(enumSpec, enumName) {
+        _.extend(docs[parentClass], GENERATE_ENUM(enumName, enumSpec));
+      });
+      docs[parentClass].prototype = {};
+      _.each(_.omit(classSpec.methods, parentClass), function(methodSpec, methodName) {
+        _.extend(docs[parentClass].prototype, GENERATE_METHOD(methodName, methodSpec));
+      });
+      _.each(classSpec.variables, function(variableSpec, variableName) {
+        _.extend(docs[parentClass].prototype, GENERATE_VARIABLE(variableName, variableSpec));
+      });
+    }
+  });
+  return docs;
+}
+
+
 // generate method spec
 function GENERATE_METHOD(name, spec) {
   var doc = {};
diff --git a/doxy/node/generators/yuidoc/generator.js b/doxy/node/generators/yuidoc/generator.js
index 94c45ea6..fb5fe2ab 100644
--- a/doxy/node/generators/yuidoc/generator.js
+++ b/doxy/node/generators/yuidoc/generator.js
@@ -46,7 +46,7 @@ function generateDocs(specjs) {
     docs += GENERATE_MODULE('common', '');
     var grouped = _.flatten(_.pluck(_.values(specjs.CLASSGROUPS), 'classes'));
     var ungrouped = _.difference(_.keys(specjs.CLASSES), grouped);
-    docs += GENERATE_CLASSES(_.pick(specjs.CLASSES, ungrouped), 'common');
+    docs += GENERATE_CLASSES(_.pick(specjs.CLASSES, ungrouped), 'common'); 
     _.each(specjs.CLASSGROUPS, function(groupSpec, groupName) {
       docs += GENERATE_CLASSES(_.pick(specjs.CLASSES, groupSpec.classes), groupName);
     });
@@ -76,7 +76,7 @@ function GENERATE_MODULE(name, description) {
 function GENERATE_CLASSES(classes, parent) {
   return _.reduce(classes, function(memo, classSpec, className) {
     return memo
-      + GENERATE_CLASS(className, classSpec.description, parent)
+      + GENERATE_CLASS(className, classSpec.description, parent, classSpec.parent)
       + _.reduce(classSpec.methods, function(memo, methodSpec, methodName) {
         return memo += GENERATE_METHOD(methodName, methodSpec, className);
       }, '') 
@@ -91,15 +91,21 @@ function GENERATE_CLASSES(classes, parent) {
 
 
 // generate class spec
-function GENERATE_CLASS(name, description, parent) {
+function GENERATE_CLASS(name, description, namespace, parent) {
   return GENERATE_DOC(description + '\n' 
     + '@class ' + name + '\n'
-    + (parent ? ('@module ' + parent + '\n') : ''));
+    + (namespace ? ('@module ' + namespace + '\n') : '')
+    /*
+    TODO: leave out until figure out what swig does with inheritance
+    + (parent ? ('@extends ' + parent + '\n') : '')
+    */
+  );
 }
 
 
 // generate method spec with parent module/class
 function GENERATE_METHOD(name, spec, parent) {
+  name = name.replace(/!+$/, '');
   return GENERATE_DOC(spec.description + '\n'
     + '@method ' + name + '\n'
     + (parent ? ('@for ' + parent + '\n') : '@for common\n')
diff --git a/doxy/node/generators/yuidoc/helper.js b/doxy/node/generators/yuidoc/helper.js
index 504e3767..d65bf582 100644
--- a/doxy/node/generators/yuidoc/helper.js
+++ b/doxy/node/generators/yuidoc/helper.js
@@ -77,17 +77,15 @@ function listByGroup(modules, classes, field, projectRoot) {
   var groups = Object.keys(modulesByGroup).sort();
   var html = '';
   var pfx = projectRoot + 'modules/';
-  var first = true;
   for (i = 0; i < groups.length; i++) {
     var group = groups[i];
-    html += (first ? '' : '</span>');
     html += '<div class="upmGroup"><div class="right-arrow"></div>' + group + '</div><span class="upmModules" style="display:none">';
     var moduleNames = modulesByGroup[group];
     for (j = 0; j < moduleNames.length; j++) {
       var moduleName = moduleNames[j];
       html += '<a href="' + pfx + moduleName + '.html">' + moduleName + '</a>';
     }
-    first = false;
+    html += '</span>';
   }
   return html;
 }
@@ -117,7 +115,7 @@ var insertStyles = "Y.one(document.head).append('<style> \
     font-size: 0;                                        \
     margin-right: 5px;                                   \
     vertical-align: 5px;                                 \
-    display: inline;                                     \
+    float: left                                          \
   }                                                      \
   div.down-arrow {                                       \
     width: 0;                                            \
@@ -127,7 +125,7 @@ var insertStyles = "Y.one(document.head).append('<style> \
     border-top: 5px solid #356de4;                       \
     font-size: 0;                                        \
     margin-right: 5px;                                   \
-    display: inline;                                     \
+    float: left                                          \
   }                                                      \
   div.upmGroup {                                         \
     font-weight: bold;                                   \
@@ -137,7 +135,7 @@ var insertStyles = "Y.one(document.head).append('<style> \
 
 var scripts = "YUI().use('node', 'event', function (Y) {"
   + onClickHandler  
-  + insertStyles
+//  + insertStyles
   + "});";
 
 
diff --git a/doxy/node/generators/yuidoc/tmpl/assets/css/main.css b/doxy/node/generators/yuidoc/tmpl/assets/css/main.css
index 4a169629..51e88903 100644
--- a/doxy/node/generators/yuidoc/tmpl/assets/css/main.css
+++ b/doxy/node/generators/yuidoc/tmpl/assets/css/main.css
@@ -787,3 +787,28 @@ kbd .cmd { font-family: Monaco, Helvetica; }
     font-weight: bold;
 }
 
+div.right-arrow {                                      
+    width: 0;                                            
+    height: 0;                                           
+    border-bottom: 5px solid transparent;                
+    border-top: 5px solid transparent;                   
+    border-left: 5px solid #356de4;                      
+    font-size: 0;                                        
+    margin-right: 5px;                                                            
+    float: left                                          
+  }                                                      
+
+div.down-arrow {                                       
+    width: 0;                                            
+    height: 0;                                           
+    border-left: 5px solid transparent;                  
+    border-right: 5px solid transparent;                 
+    border-top: 5px solid #356de4;                       
+    font-size: 0;                                        
+    margin-right: 5px;                                                                 
+    float: left                                          
+}                                                      
+
+div.upmGroup {                                         
+    font-weight: bold;                                   
+}                                                      
diff --git a/doxy/node/xml2js.js b/doxy/node/xml2js.js
index 48431c8b..95af7617 100644
--- a/doxy/node/xml2js.js
+++ b/doxy/node/xml2js.js
@@ -69,6 +69,8 @@ var xml2js = {
   // CLASSES: {
   //   <class name>: {
   //     description: <class description>,
+  //     parent: <parent class name>,
+  //     group: <group name>,
   //     methods: { ... },
   //     variables: {
   //       <variable name>: {
@@ -83,7 +85,9 @@ var xml2js = {
   // CLASSGROUPS: {
   //   <group name>: {
   //     description: <group description>,
-  //     classes: [ <class name>, ... ]
+  //     classes: [ <class name>, ... ],
+  //     enums: { ... },
+  //     enums_by_group: { ... }
   //   }, ...
   // }
   MODULE: '',
@@ -98,7 +102,8 @@ var xml2js = {
   TYPEMAPS: {
     '^(const)?\\s*(unsigned|signed)?\\s*(int|short|long|float|double|size_t|u?int\\d{1,2}_t)?$': 'Number',
     '^bool$': 'Boolean',
-    '^(const)?\\s*(unsigned|signed)?\\s*(char|char\\s*\\*|std::string)$': 'String'  // TODO: verify that swig does this mapping
+    '^(const)?\\s*(unsigned|signed)?\\s*(char|char\\s*\\*|std::string)$': 'String',  // TODO: verify that swig does this mapping
+    '^void\\s*\\(\\s*\\*\\s*\\)\\s*\\(\\s*void\\s*\\*\\)\\s*$': 'Function'
   },
 
 
@@ -157,13 +162,14 @@ var xml2js = {
           try {
             var spec_c = xmlparser.parse(xml)[0];
             var className = getName(spec_c);
-            xml2js.CLASSES[className] = {
+            _.extend(xml2js.CLASSES[className], {
               description: getDescription(spec_c),
+              parent: getParent(spec_c, className),
               enums: getEnums(spec_c, false, className),
               enums_by_group: getEnums(spec_c, true, className),
               variables: getVariables(spec_c, className),
               methods: getMethods(spec_c, className)
-            };
+            });
           } catch(e) {
             console.log(e.toString() + ': class ' + className + ' was not parsed correctly.');
           }
@@ -177,15 +183,48 @@ var xml2js = {
           return fs.readFileAsync(xml2js.opts.inputdir + '/' + fn, 'utf8').then(function(xml) {
             var spec_c = xmlparser.parse(xml)[0];
             if (_.isEmpty(getSubmodules(spec_c))) {
-              xml2js.CLASSGROUPS[getName(spec_c)] = {
+              var group = getName(spec_c);
+              var classes = getSubclassNames(spec_c);
+              xml2js.CLASSGROUPS[group] = {
                 description: getDescription(spec_c),
-                classes: getSubclassNames(spec_c)
-              }
+                classes: classes
+              };
+              _.each(classes, function(c) {
+                if (_.has(xml2js.CLASSES, c)) {
+                  xml2js.CLASSES[c].group = group;
+                } else {
+                  console.log('Warning: Group ' + group + ' has unknown class ' + c);
+                }
+              });
             }
           });
         }));
       });
       return Promise.all(parseClasses.concat(parseGroups));
+    }).then(function() {
+      if (!_.isEmpty(xml2js.CLASSGROUPS)) {
+        // try to categorize ungrouped classes, if any
+        var grouped = _.flatten(_.pluck(_.values(xml2js.CLASSGROUPS), 'classes'));
+        var ungrouped = _.difference(_.keys(xml2js.CLASSES), grouped);
+        _.each(ungrouped, function(c) {
+          _.each(findUsage(c), function(group) {
+            xml2js.CLASSGROUPS[group].classes.push(c);
+          });
+        });
+        grouped = _.flatten(_.pluck(_.values(xml2js.CLASSGROUPS), 'classes'));
+        ungrouped = _.difference(_.keys(xml2js.CLASSES), grouped);
+        // try to categorize ungrouped enums, if any
+        _.each(xml2js.ENUMS_BY_GROUP, function(enumGroupSpec, enumGroupName) {
+          _.each(findUsage(enumGroupName, true), function(c) {
+            xml2js.CLASSES[c].enums_by_group[enumGroupName] = enumGroupSpec;            
+            _.each(enumGroupSpec.members, function(enumName) {
+              xml2js.CLASSES[c].enums[enumName] = xml2js.ENUMS[enumName];
+              delete xml2js.ENUMS[enumName];
+            });
+            delete xml2js.ENUMS_BY_GROUP[enumGroupName];
+          });
+        });
+      }
     }).then(function() {
       if (xml2js.opts.custom && fs.existsSync(xml2js.opts.custom)) {
         return fs.readFileAsync(xml2js.opts.custom, 'utf8').then(function(custom) {
@@ -199,9 +238,9 @@ var xml2js = {
         console.log(xml2js.opts.custom ? ('Error: No such customization file exists: ' + xml2js.opts.custom) : 'No customizations given.');
       }
     }).then(function() {
+      generateCustomPointerClasses();       
       validateMethods();
       validateVars();
-      generateCustomPointerClasses();
       return _.pick(xml2js, 'MODULE', 'ENUMS', 'ENUMS_BY_GROUP', 'METHODS', 'CLASSES', 'CLASSGROUPS');
     });
   }
@@ -391,7 +430,30 @@ function generateCustomPointerClasses() {
 }
 
 
-// override autogenerated methods with custom configuration
+// search for usage of a type
+function findUsage(type, classOnly) {
+  var filterClasses = function(fn) { return _.without(_.map(xml2js.CLASSES, fn), undefined); };
+  var usesType = function(classSpec, className) {
+    var methodsOfType = (_.find(classSpec.methods, function(methodSpec, methodName) {
+      return ((!_.isEmpty(methodSpec.return) && methodSpec.return.type == type) || 
+              (_.contains(_.pluck(methodSpec.params, 'type'), type)));
+    }) != undefined);
+    var variablesOfType = _.contains(_.pluck(classSpec.variable, 'type'), type);
+    return ((methodsOfType || variablesOfType) ? className : undefined);
+  };
+  var extendsType = function(classSpec, className) {
+    return ((classSpec.parent == type) ? className : undefined);
+  };
+  var classes = _.union(filterClasses(usesType), filterClasses(extendsType));
+  if (classOnly) {
+    return classes;
+  } else {
+    return _.without(_.uniq(_.pluck(_.pick(xml2js.CLASSES, classes), 'group')), undefined);
+  }
+}
+
+
+// override autogenerated methods with custom configuration 
 function customizeMethods(custom) {
   _.each(custom, function(classMethods, className) {
     _.extend(xml2js.CLASSES[className].methods, _.pick(classMethods, function(methodSpec, methodName) {
@@ -527,6 +589,19 @@ function getSubmodules(spec_c) {
 }
 
 
+// get parent class, if any
+function getParent(spec_c, className) {
+  var parent = getChild(spec_c, 'basecompoundref');
+  if (parent) {
+    parent = getText(parent);
+    if (!_.has(xml2js.CLASSES, parent)) {
+      console.log('WARNING: Class ' + className + ' has unknown parent class ' + parent);
+    }
+  }
+  return parent;
+}
+
+
 function hasParams(paramsSpec) {
   return !(_.isEmpty(paramsSpec) ||
            ((_.size(paramsSpec) == 1) && getText(getChild(paramsSpec[0], 'type')) == 'void'));
@@ -559,6 +634,7 @@ function getMethods(spec_c, parent) {
           if (!_.isEmpty(returnSpec)) {
             retval = getReturn(returnSpec, getReturnDetails(description), methodName, parent);
           }
+          methodName = getUniqueMethodName(methodName, spec_js, parent);
           spec_js[methodName] = {
             description: methodDescription,
             params: params,
@@ -575,6 +651,17 @@ function getMethods(spec_c, parent) {
 }
 
 
+// get a unique string to represent the name of an overloaded method
+function getUniqueMethodName(methodName, module, parent) {
+  if (methodName in module) {
+    do {
+      methodName += '!';
+    } while (methodName in module);
+  }
+  return methodName;
+}
+
+
 // get variable specifications for a class
 function getVariables(spec_c, parent) {
   var spec_js = {};