diff --git a/src/test/testFormats.c b/src/test/testFormats.c
index f78a328..ab97cda 100644
--- a/src/test/testFormats.c
+++ b/src/test/testFormats.c
@@ -8,6 +8,7 @@ int test_binaryToHex() {
     return 1; // TODO
 }
 
+// Testing the toBinary function with an input of 0 and a size of 5.
 int test_toBinary_0_size5() {
     int size = 5;
     int * binary = toBinary(0, size);
@@ -17,9 +18,11 @@ int test_toBinary_0_size5() {
     for(int i = 0; i < size; i++)
         if(binary[i] != expectedOutput[i]) cmp = 0;
     
+    free(binary);
     return cmp;
 }
 
+// Testing the toBinary function with an input of 0 and a size of 6.
 int test_toBinary_0_size6() {
     int size = 6;
     int * binary = toBinary(0, size);
@@ -29,9 +32,11 @@ int test_toBinary_0_size6() {
     for(int i = 0; i < size; i++)
         if(binary[i] != expectedOutput[i]) cmp = 0;
     
+    free(binary);
     return cmp;
 }
 
+// Testing the toBinary function with an input of 10 and a size of 6.
 int test_toBinary_10_size6() {
     int size = 6;
     int * binary = toBinary(10, size);
@@ -41,9 +46,11 @@ int test_toBinary_10_size6() {
     for(int i = 0; i < size; i++)
         if(binary[i] != expectedOutput[i]) cmp = 0;
     
+    free(binary);
     return cmp;
 }
 
+// Testing the toBinary function with an input of 20 and a size of 6.
 int test_toBinary_20_size6() {
     int size = 6;
     int * binary = toBinary(20, size);
@@ -53,9 +60,11 @@ int test_toBinary_20_size6() {
     for(int i = 0; i < size; i++)
         if(binary[i] != expectedOutput[i]) cmp = 0;
     
+    free(binary);
     return cmp;
 }
 
+// Testing the toBinary function with an input of 17 and a size of 16.
 int test_toBinary_17_size16() {
     int size = 16;
     int * binary = toBinary(17, size);
@@ -65,6 +74,7 @@ int test_toBinary_17_size16() {
     for(int i = 0; i < size; i++)
         if(binary[i] != expectedOutput[i]) cmp = 0;
     
+    free(binary);
     return cmp;
 }
 
diff --git a/src/util/formats.h b/src/util/formats.h
index 2a37961..e0dfe70 100644
--- a/src/util/formats.h
+++ b/src/util/formats.h
@@ -8,12 +8,17 @@ char* binaryToHex(char* bin) {
 
 // Utility function to convert a number to binary
 int* toBinary(int num, int size) {
+    // Dynamically allows for different sized arrays. Need to manually release from memory.
     int * bin = (int*)calloc(size, sizeof(int));
+
+    // Fill up the array with default values.
     for(int i = 0; i < size; i++)
         bin[i] = 0;
 
     if(num == 0) return bin;
 
+    // Since the binary values are calculated in reverse order, entering the values into the array
+    // in reverse order will negate this, and leave us with an array in the correct order.
     int i = size - 1;
     while(num > 0) {
         bin[i] = num % 2;
@@ -43,12 +48,6 @@ typedef struct r {
 char* rToBinary(r* format) {
     char binary[32];
     
-    char* opcode = toBinary(format->opcode, format->opcode_size);
-    if(format->opcode == 0) 
-        for(int i = 0; i < 6; i++) binary[i] = 0;
-
-
-
     return binary;
 }