diff --git a/include/devil1pld.h b/include/devil1pld.h
index 2082afc..a128a81 100644
--- a/include/devil1pld.h
+++ b/include/devil1pld.h
@@ -2,17 +2,20 @@
 #define DEVIL1PLD_H
 
 #include <stdint.h>
-#pragma pack(1)
 struct PldHeader {
     int32_t numOffset;
     // array of numOffset elements
     uint32_t *offsets; // <format=hex>
 };
 
-// input: a pld header struct.
-void showpldh(struct PldHeader *);
-
 // input: contents of the .pld file.
+// allocates heap memory
 struct PldHeader *getpldh(const char*);
 
+// frees heap memory
+void destroypldh(struct PldHeader*);
+
+// input: a pld header struct.
+void showpldh(struct PldHeader*);
+
 #endif
\ No newline at end of file
diff --git a/src/devil1pld.c b/src/devil1pld.c
index 5169a17..d7a760b 100644
--- a/src/devil1pld.c
+++ b/src/devil1pld.c
@@ -1,24 +1,13 @@
 #include "devil1pld.h"
-#include "stdio.h"
-#include "stdlib.h"
-#include "string.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 
-void printpldh(struct PldHeader *ph) {
-    if (ph == NULL) {
-        return;
-    }
-    printf("number of offsets = %i\n", ph -> numOffset);
-    unsigned int i;
-    for (i = 0; i < ph -> numOffset; i++) {
-        printf("offset %i = %x\n", i, ph -> offsets[i]);
-    }
-}
-
-struct PldHeader *getpldh(const char *buffer) {
-    if (buffer == NULL) {
+struct PldHeader *getpldh(const char *filedata) {
+    if (filedata == NULL) {
         return NULL;
     }
-    int32_t *n                = (int32_t*)buffer;
+    int32_t *n                = (int32_t*)filedata;
     struct PldHeader *ph      = (struct PldHeader*)malloc(
         sizeof(struct PldHeader)
     );   
@@ -32,6 +21,23 @@ struct PldHeader *getpldh(const char *buffer) {
     }
     // set data of struct.
     ph -> numOffset = n[0];
-    memcpy(ph -> offsets, buffer + sizeof(int32_t), size_offsets);
+    memcpy(ph -> offsets, filedata + sizeof(int32_t), size_offsets);
     return ph;
 }
+
+void destroypldh(struct PldHeader *ph) {
+    free(ph -> offsets);
+    free(ph);
+    ph = NULL;
+}
+
+void printpldh(struct PldHeader *ph) {
+    if (ph == NULL) {
+        return;
+    }
+    printf("number of offsets = %i\n", ph -> numOffset);
+    unsigned int i;
+    for (i = 0; i < ph -> numOffset; i++) {
+        printf("offset %i = %x\n", i, ph -> offsets[i]);
+    }
+}