diff --git a/jdr/sheet.go b/jdr/sheet.go
index 8460c31..2d6a60e 100644
--- a/jdr/sheet.go
+++ b/jdr/sheet.go
@@ -323,13 +323,10 @@ func parseSheet(root xmlNode) (*CharacterSheet, error) {
 
         switch node.XMLName.Local {
         case "custom-types":
-            types, err := parseCustomTypes(node)
+            err := parseCustomTypes(node, sheet)
             if err != nil {
                 return nil, err
             }
-            for j := 0; j < len(types); j++ {
-                sheet.AddType(types[j])
-            }
 
         case "page":
             page, err := parsePage(node, sheet)
diff --git a/jdr/type.go b/jdr/type.go
index e62b60d..58ddf80 100644
--- a/jdr/type.go
+++ b/jdr/type.go
@@ -8,6 +8,7 @@ import(
     "strings"
     "strconv"
     "regexp"
+    "encoding/json"
 )
 
 var regexp_d = regexp.MustCompile(`^[1-9][0-9]*d([468]|1[02]|20|100)$`)
@@ -258,7 +259,7 @@ func (self *CustomEnum) DefaultValue() string {
 
 type CustomStruct struct {
     name        string
-    Variables   []Variable
+    Variables   []*Variable
 }
 
 func (self *CustomStruct) Name() string {
@@ -266,19 +267,67 @@ func (self *CustomStruct) Name() string {
 }
 
 func (self *CustomStruct) Validate(s string) bool {
-    //FIXME
-    log.Println("Custom struct Validate is not (yet) implemented")
-    return false
+    var jsonValue map[string]interface{}
+    err := json.Unmarshal([]byte(s), &jsonValue)
+    if err != nil {
+        log.Fatal(err)
+        return false
+    }
+
+    for _, v := range self.Variables {
+        jsonVal, isString := jsonValue[v.Name()].(string)
+        if !isString || ! v.Type.Validate(jsonVal) {
+            return false
+        }
+    }
+
+    return true
 }
 
 func (self *CustomStruct) ToHTML(value string) (template.HTML, error) {
-    //FIXME: implement
-    return template.HTML(""), nil
+
+    var jsonValue map[string]interface{}
+    err := json.Unmarshal([]byte(value), &jsonValue)
+    if err != nil {
+        log.Fatal(err)
+        return template.HTML(""), errors.New("Cannot unmarshal JSON")
+    }
+
+    ret := template.HTML("")
+    ret += `<div>`
+    for _, v := range self.Variables {
+        log.Println("variable:", v.Name())
+        jsonVal, isString := jsonValue[v.Name()].(string)
+        if !isString {
+            return template.HTML(""), errors.New("Variable " + v.Name() + " is not a string")
+        }
+
+        html, err := v.Type.ToHTML(jsonVal)
+        if err != nil {
+            return template.HTML(""), err
+        }
+
+        ret += html
+    }
+    ret += `</div>`
+
+    return ret, nil
 }
 
 func (self *CustomStruct) DefaultValue() string {
-    //FIXME: non-generic version
-    return ""
+    ret := `{`
+    for i, v := range self.Variables {
+        if i > 0 {
+            ret += ","
+        }
+        ret += `"`
+        ret += v.Name()
+        ret += `":"`
+        ret += v.Type.DefaultValue()
+        ret += `"`
+    }
+    ret += `}`
+    return ret
 }
 
 func parseCustomEnum(root xmlNode) (*CustomEnum, error) {
@@ -329,7 +378,7 @@ func parseCustomEnum(root xmlNode) (*CustomEnum, error) {
     return &customEnum, nil
 }
 
-func parseCustomStruct(root xmlNode) (*CustomStruct, error) {
+func parseCustomStruct(root xmlNode, sheet *CharacterSheet) (*CustomStruct, error) {
     customType := CustomStruct{}
 
     nameOk := false
@@ -343,16 +392,31 @@ func parseCustomStruct(root xmlNode) (*CustomStruct, error) {
             customType.name = attrVal
         }
     }
+
     if !nameOk {
         return nil, errors.New("Unnamed custom type")
     }
 
+    for i := 0; i < len(root.Nodes); i++ {
+        node := root.Nodes[i]
+
+        switch node.XMLName.Local {
+        case "variable":
+            variable, err := parseVariable(node, sheet, nil)
+            if err != nil {
+                return nil, err
+            }
+
+            customType.Variables = append(customType.Variables, variable)
+        default:
+            return nil, errors.New("Unknown tag in custom type: " + node.XMLName.Local)
+        }
+    }
+
     return &customType, nil
 }
 
-func parseCustomTypes(root xmlNode) ([]VariableType, error) {
-    types := []VariableType{}
-
+func parseCustomTypes(root xmlNode, sheet *CharacterSheet) (error) {
     for i := 0; i < len(root.Nodes); i++ {
         node := root.Nodes[i]
 
@@ -360,19 +424,19 @@ func parseCustomTypes(root xmlNode) ([]VariableType, error) {
         case "enum":
             customEnum, err := parseCustomEnum(node)
             if err != nil {
-                return []VariableType{}, err
+                return err
             }
-            types = append(types, customEnum)
+            sheet.AddType(customEnum)
         case "type":
-            customType, err := parseCustomStruct(node)
+            customType, err := parseCustomStruct(node, sheet)
             if err != nil {
-                return []VariableType{}, err
+                return err
             }
-            types = append(types, customType)
+            sheet.AddType(customType)
         default:
-            return []VariableType{}, errors.New("Unknown CustomType: " + root.Nodes[i].XMLName.Local)
+            return errors.New("Unknown CustomType: " + root.Nodes[i].XMLName.Local)
         }
     }
 
-    return types, nil
+    return nil
 }