diff --git a/src/env.c b/src/env.c
index 2f9e5cb..3ea4909 100644
--- a/src/env.c
+++ b/src/env.c
@@ -229,7 +229,7 @@ struct Environment defaultEnv()
         {"cat", &catObjects}, {"fil", &filter}, {"len", &len},
         {"ap", &append}, {"pre", &prepend},
         {"at", &at}, {"rest", &rest}, {"rev", &reverse},
-        {"isnum", &isNum}, {"isstr", &isString},
+        {"isnum", &isNum}, {"isstr", &isString}, {"iserr", &isErr},
         {"prn", &print}, {"pch", &pChar}, {"penv", &printEnvO},
         {"eval", &parseEvalO},
         #ifdef STANDALONE
diff --git a/src/object.c b/src/object.c
index 5a00b9b..de292e6 100644
--- a/src/object.c
+++ b/src/object.c
@@ -331,44 +331,54 @@ void debugObj(const Object *obj)
     return;
 }
 
-void _printList(const Object *list, int newline);
-void _printObj(const Object *obj, int newline)
+void printType(const Object *obj)
 {
     switch(obj->type) {
         case TYPE_NUMBER:
-            printd("TYPE_NUMBER");
-            break;
+            printf("TYPE_NUMBER");
+            return;
         case TYPE_BOOL:
-            printd("TYPE_BOOL");
-            break;
+            printf("TYPE_BOOL");
+            return;
         case TYPE_LIST:
-            printd("TYPE_LIST\n");
-            break;
+            printf("TYPE_LIST");
+            return;
         case TYPE_FUNC:
-            printd("TYPE_FUNC");
-            break;
+            printf("TYPE_FUNC");
+            return;
         case TYPE_SYMBOL:
-            printd("TYPE_SYMBOL");
-            break;
+            printf("TYPE_SYMBOL");
+            return;
         case TYPE_STRING:
-            printd("TYPE_STRING");
-            break;
+            printf("TYPE_STRING");
+            return;
         case TYPE_LAMBDA:
-            printd("TYPE_LAMBDA Params:\n");
-            printObj(&obj->lambda->params);
-            printf("->");
-            printd("Lambda Body: \n");
-            printObj(&obj->lambda->body);
+            printf("TYPE_LAMBDA Params:\n");
             return;
         case TYPE_OTHER:
-            printd("TYPE_OTHER: ");
+            printf("TYPE_OTHER: ");
         case TYPE_ERROR:
-            printd("TYPE_ERROR: ");
-            break;
+            printf("TYPE_ERROR: ");
+            return;
     }
 
     if(!isValidType(*obj))
-        printd("TYPE_OTHER (as int)");
+        printf("UNKNOWN TYPE (%d)", obj->type);
+}
+
+void _printList(const Object *list, int newline);
+void _printObj(const Object *obj, int newline)
+{
+    #ifdef DEBUG
+    printType(obj);
+    #endif
+
+    if (obj->type == TYPE_LAMBDA) {
+        printObj(&obj->lambda->params);
+        printf("->");
+        printObj(&obj->lambda->body);
+        return;
+    }
 
     char temp[100] = "";
     stringObj(temp, obj);
diff --git a/src/object.h b/src/object.h
index 0841a57..ee323eb 100644
--- a/src/object.h
+++ b/src/object.h
@@ -2,7 +2,7 @@
 #define OBJECT_H
 
 #define MAX_TOK_CNT 1024 // 128
-#define MAX_ENV_ELM 50  // 50
+#define MAX_ENV_ELM 100
 
 #define FOR_POINTER_IN_LIST(_list) \
     if(_list && _list->type == TYPE_LIST) \
@@ -90,6 +90,7 @@ struct Other {
 
 char* stringObj(char *dest, const Object *obj);
 void printList(const Object *list);
+void printType(const Object *obj);
 void printObj(const Object *obj);
 void _printObj(const Object *obj, int newline);
 void debugObj(const Object *obj);
diff --git a/src/pebblisp.c b/src/pebblisp.c
index 6ce55f3..1e33f6d 100644
--- a/src/pebblisp.c
+++ b/src/pebblisp.c
@@ -20,29 +20,27 @@
  * @param env The environment to add the new definition to
  * @return The symbol(s) defined
  */
-Object evalDefArgs(const Object *argForms, struct Environment *env)
+Object evalDefArgs(const Object *symbol, const Object *value, struct Environment *env)
 {
-    const Object *newSymbol = argForms;
-    const Object *newValue = argForms->forward;
-    const char *name = newSymbol->string;
+    const char *name = symbol->string;
 
     // Handles multi-definitions
-    if(newSymbol->type == TYPE_LIST && newValue->type == TYPE_LIST
-        && listLength(newSymbol) == listLength(newValue)) {
-        FOR_POINTERS_IN_LISTS(newSymbol, newValue) {
+    if(symbol->type == TYPE_LIST && value->type == TYPE_LIST
+        && listLength(symbol) == listLength(value)) {
+        FOR_POINTERS_IN_LISTS(symbol, value) {
             Object finalValue = eval(P2, env);
             addToEnv(env, P1->string, finalValue);
             cleanObject(&finalValue);
         }
-        return cloneObject(*newSymbol);
+        return cloneObject(*symbol);
     }
 
-    Object finalValue = eval(newSymbol->forward, env);
+    Object finalValue = eval(value, env);
 
     addToEnv(env, name, finalValue);
     cleanObject(&finalValue);
 
-    return cloneObject(*newSymbol);
+    return cloneObject(*symbol);
 }
 
 Object evalIfArgs(const Object *argForms, struct Environment *env)
@@ -101,7 +99,13 @@ Object evalBuiltIns(const Object *first, const Object *rest,
     }
 
     if(strcmp(first->string, "def") == 0) {
-        return evalDefArgs(rest, env);
+        return evalDefArgs(rest, rest->forward, env);
+    } else if(strcmp(first->string, "defe") == 0) {
+        Object symbol = eval(rest, env);
+        printObj(&symbol);
+        Object e = evalDefArgs(&symbol, rest->forward, env);
+        cleanObject(&symbol);
+        return e;
     } else if(strcmp(first->string, "if") == 0) {
         return evalIfArgs(rest, env);
     } else if(strcmp(first->string, "fn") == 0) {
@@ -493,6 +497,12 @@ Object isString(Object test, Object ignore, struct Environment *ignore2)
 		boolObject(1) : boolObject(0);
 }
 
+Object isErr(Object test, Object ignore, struct Environment *ignore2)
+{
+	return test.type == TYPE_ERROR ?
+		boolObject(1) : boolObject(0);
+}
+
 Object print(Object p, Object ignore, struct Environment *env)
 {
     p = cloneObject(p);
@@ -521,7 +531,12 @@ Object printEnvO(Object i1, Object i2, struct Environment *env) {
 
 Object parseEvalO(Object text, Object ignore, struct Environment *env)
 {
-    if(text.type != TYPE_STRING) {
+    if(text.type == TYPE_SYMBOL) {
+        Object string = eval(&text, env);
+        Object parsed = parseEval(string.string, env);
+        cleanObject(&string);
+        return parsed;
+    } else if(text.type != TYPE_STRING) {
         return errorObject(CAN_ONLY_EVAL_STRINGS);
     }
     return parseEval(text.string, env);
diff --git a/src/pebblisp.h b/src/pebblisp.h
index 4e67867..8a9bdc0 100644
--- a/src/pebblisp.h
+++ b/src/pebblisp.h
@@ -57,6 +57,7 @@ Object reverse(Object _list, Object ignore, struct Environment *ignore2);
 
 Object isNum(Object test, Object ignore, struct Environment *ignore2);
 Object isString(Object test, Object ignore, struct Environment *ignore2);
+Object isErr(Object test, Object ignore, struct Environment *ignore2);
 
 Object print(Object p, Object ignore, struct Environment *ignore2);
 Object pChar(Object c, Object i1, struct Environment *i2);