Update tar.h

src/tar.h

@@ -1,6 +1,8 @@
 #ifndef MINITAR_TAR_H
 #define MINITAR_TAR_H
 
+// Format of a raw standard tar header.
+
 struct tar_header
 {
     char name[100];
@@ -19,7 +21,8 @@ struct tar_header
     char devmajor[8];
     char devminor[8];
     char prefix[155];
-    char padding[12]; // to make the structure 512 bytes
+
+    char padding[12]; // Not part of the header, only used to make the structure 512 bytes
 } __attribute__((packed));
 
 #endif