diff --git a/appinfo.json b/appinfo.json
index dcfa861..15793ef 100644
--- a/appinfo.json
+++ b/appinfo.json
@@ -3,7 +3,7 @@
     "capabilities": [
         ""
     ],
-    "companyName": "Save V.",
+    "companyName": "Sage V.",
     "enableMultiJS": false,
     "longName": "PebbLisp",
     "projectType": "native",
diff --git a/resources/images/appicon.png b/resources/images/appicon.png
index 65e044b..58e43c6 100644
Binary files a/resources/images/appicon.png and b/resources/images/appicon.png differ
diff --git a/src/.pebblisp.c.swp b/src/.pebblisp.c.swp
index f15e356..7ab91f5 100644
Binary files a/src/.pebblisp.c.swp and b/src/.pebblisp.c.swp differ
diff --git a/src/.pebblisp.h.swp b/src/.pebblisp.h.swp
deleted file mode 100644
index 14ae095..0000000
Binary files a/src/.pebblisp.h.swp and /dev/null differ
diff --git a/src/calc.c b/src/calc.c
index 64f9f75..0b77c17 100644
--- a/src/calc.c
+++ b/src/calc.c
@@ -35,6 +35,17 @@ static void up_down_handler(ClickRecognizerRef recognizer, void *context){
   updateText();
 }
 
+static void back_handler(ClickRecognizerRef recognizer, void *context) {
+    if(mytext[0] == '\0') {
+        window_stack_remove(window_stack_get_top_window(), true);
+    } else {
+        int i = 0;
+        while(mytext[++i] != '\0') { ; }
+        mytext[i-1] = '\0';
+        updateText();
+    }
+}
+
 // Adds the current string to the main string
 static void enter(){
     strcat(mytext, getToken(selected_token));
@@ -45,10 +56,10 @@ static void enter(){
 //Calculate result, display it and reset
 static void calculate(){
     Object obj = parseEval(mytext, &env);
-    snprintf(mytext, MAX_LENGTH, "R:%d", obj.number);
+    snprintf(resulttext, MAX_LENGTH, "R:%d", obj.number);
     selected_token = 0;
     //strcpy(mytext, HAHA);
-    updateText();
+    text_layer_set_text(s_result_text_layer, resulttext);
 }
 
 // Button press handler
@@ -64,22 +75,31 @@ static void click_config_provider(void *context) {
     window_single_repeating_click_subscribe(BUTTON_ID_UP, 100, up_down_handler);
     window_single_repeating_click_subscribe(BUTTON_ID_DOWN, 100, up_down_handler);
     window_single_click_subscribe(BUTTON_ID_SELECT, select_handler);
+    window_single_click_subscribe(BUTTON_ID_BACK, back_handler);
 }
 
 static void init(void) {
     // Create a window and get information about the window
     s_window = window_create();
-    Layer *window_layer = window_get_root_layer(s_window);
+    // Layer *window_layer = window_get_root_layer(s_window);
     // Register click config provider
     window_set_click_config_provider(s_window, click_config_provider);
 
     // Input text layer setup
-    GRect text_bounds = GRect(6, 6, 132, 132);
+    GRect text_bounds = GRect(6, 6, 132, 127);
     s_input_text_layer = text_layer_create(text_bounds);
     text_layer_set_text(s_input_text_layer, getToken(1));
-    text_layer_set_font(s_input_text_layer, fonts_get_system_font(FONT_KEY_GOTHIC_24_BOLD));
+    text_layer_set_font(s_input_text_layer, fonts_get_system_font(FONT_KEY_GOTHIC_28_BOLD));
     layer_add_child(window_get_root_layer(s_window), text_layer_get_layer(s_input_text_layer));
 
+    // Result text layer setup
+    GRect result_bounds = GRect(6, 128, 132, 132);
+    s_result_text_layer = text_layer_create(result_bounds);
+    text_layer_set_text(s_result_text_layer, "R: ");
+    text_layer_set_font(s_result_text_layer, fonts_get_system_font(FONT_KEY_GOTHIC_28_BOLD));
+    text_layer_set_text_alignment(s_result_text_layer, GTextAlignmentRight);
+    layer_add_child(window_get_root_layer(s_window), text_layer_get_layer(s_result_text_layer));
+
     // Push the window, setting the window animation to 'true'
     window_stack_push(s_window, true);
     env = defaultEnv();
diff --git a/src/calc.h b/src/calc.h
index 6b4c1cc..7a23f11 100644
--- a/src/calc.h
+++ b/src/calc.h
@@ -8,11 +8,11 @@
 // Layers
 Window *s_window;
 TextLayer *s_input_text_layer;
-
-const char *HAHA = "STONKS";
+TextLayer *s_result_text_layer;
 
 char mytext[SMAX_LENGTH] = "";
 char temptext[SMAX_LENGTH] = "";
+char resulttext[MAX_LENGTH] = "";
 
 char *tokens[] = {
     "  ", "(", ")", 
diff --git a/src/pebblisp.c b/src/pebblisp.c
index 1bdda30..9c8517d 100644
--- a/src/pebblisp.c
+++ b/src/pebblisp.c
@@ -46,7 +46,7 @@ Object fetchFromEnvironment(const char *name, struct Environment *env)
 
 Result parse(struct Slice *slices)
 {
-    // printf("parse()\n");
+    printf("parse() START\n");
     struct Slice *token = slices;
     struct Slice *rest;
     if(token->text != NULL) {
@@ -62,11 +62,12 @@ Result parse(struct Slice *slices)
     } else { // todo error on closed paren
         return R(parseAtom(token), rest);
     }
+    printf("parse() END\n");
 }
 
 Result readSeq(struct Slice *tokens)
 {
-    // printf("readSeq()\n");
+    printf("readSeq() START\n");
     Object res;
     res.forward = NULL;
     res.type = TYPE_LIST;
@@ -80,13 +81,16 @@ Result readSeq(struct Slice *tokens)
             return R(res, rest);
         }
         Result r = parse(tokens);
-        march->forward = malloc(sizeof(Object));
+        printf("readSeq() before malloc\n");
+        march->forward = malloc(sizeof(struct Object));
+        printf("readSeq() after malloc\n");
         *march->forward = r.obj;
         // char out[MAX_TOK_LEN];
         // printf("stringObj: %s\n", stringObj(out, &r.obj));
         tokens = r.slices;
         march = march->forward;
     }
+    printf("readSeq() END\n");
 }
 
 Object parseAtom(struct Slice *s)
@@ -111,6 +115,8 @@ Object parseAtom(struct Slice *s)
 
 Object eval(Object *obj, struct Environment *env)
 {
+    printf("eval(): ");
+    printObj(obj);
     Object o = *obj;
     switch(obj->type) {
         case TYPE_NUMBER:
@@ -122,7 +128,9 @@ Object eval(Object *obj, struct Environment *env)
             // printf("TYPE_LIST\n");
             Object first_form = *obj->forward;
             Object first_eval = eval(&first_form, env);
-            return first_eval.func(*first_form.forward, *first_form.forward->forward);
+            Object arg1 = eval(first_form.forward, env);
+            Object arg2 = eval(first_form.forward->forward, env);
+            return first_eval.func(arg1, arg2);
         }
         case TYPE_SYMBOL:
         {
@@ -145,6 +153,22 @@ char* stringObj(char *dest, Object *obj)
     return dest;
 }
 
+void printObj(Object *obj)
+{
+    if(obj->type == TYPE_NUMBER) {
+        printf("TYPE_NUMBER");
+    } else if(obj->type == TYPE_LIST) {
+        printf("TYPE_NUMBER");
+    } else if(obj->type == TYPE_SYMBOL) {
+        printf("TYPE_NUMBER");
+    } else {
+        printf("TYPE_OTHER");
+    }
+    char temp[20];
+    stringObj(temp, obj);
+    printf(": %s\n", temp);
+}
+
 Result resultFromObjAndSlices(Object obj, struct Slice *slices)
 {
     Result r;
@@ -211,6 +235,9 @@ void addFunc(const char *name, Object (*func)(Object, Object),
 struct Environment defaultEnv() {
     struct Environment e;
     e.strings = malloc(sizeof(char*) * MAX_ENV_ELM);
+    for(int i = 0; i < MAX_ENV_ELM; i++) {
+        e.strings[i] = NULL;
+    }
     e.objects = malloc(sizeof(Object) * MAX_ENV_ELM);
     addFunc("+", &add, &e);
     addFunc("-", &sub, &e);
@@ -248,6 +275,7 @@ Object parseEval(const char *input, struct Environment *env)
     // printf("parseEval() parse()\n");
 #endif
     Object parsed = parse(tokens).obj;
+    free(tokens);
     return eval(&parsed, env);
 }
 
diff --git a/src/pebblisp.h b/src/pebblisp.h
index da97a6c..f1891e1 100644
--- a/src/pebblisp.h
+++ b/src/pebblisp.h
@@ -3,9 +3,9 @@
 
 // #define STANDALONE
 
-#define MAX_TOK_LEN 3
-#define MAX_TOK_CNT 7 // 128
-#define MAX_ENV_ELM 3 // 50
+#define MAX_TOK_LEN 4
+#define MAX_TOK_CNT 128 // 128
+#define MAX_ENV_ELM 15 // 50
 
 // static const char* tokenFail = "Missing ')'\n";
 
@@ -69,6 +69,7 @@ Object parseAtom(struct Slice *slice);
 void copySlice(char * dest, struct Slice *src);
 Object parseEval(const char *input, struct Environment *env);
 struct Environment defaultEnv();
+void printObj(Object *obj);
 
 Result resultFromObjAndSlices(Object obj, struct Slice *slices);
 Object add(Object obj1, Object obj2);