diff --git a/include/ki/util/BitStream.h b/include/ki/util/BitStream.h
index 7baf141..3b26a94 100644
--- a/include/ki/util/BitStream.h
+++ b/include/ki/util/BitStream.h
@@ -21,6 +21,7 @@ namespace ki
 			explicit stream_pos(intmax_t byte = 0, int bit = 0);
 			stream_pos(const stream_pos &cp);
 
+			intmax_t as_bits() const;
 			intmax_t get_byte() const;
 			uint8_t get_bit() const;
 			
@@ -148,6 +149,20 @@ namespace ki
 			}
 		}
 
+		/**
+		 * Copy memory from an external buffer into the bitstream's buffer from the current position.
+		 * @param src The buffer to copy data from.
+		 * @param bitsize The number of bits to copy from the src buffer.
+		 */
+		void write_copy(uint8_t *src, std::size_t bitsize);
+
+		/**
+		 * Copy memory from the bitstream's buffer into an external buffer.
+		 * @param dst The destination buffer to copy data to.
+		 * @param bitsize The number of bits to copy into the dst buffer.
+		 */
+		void read_copy(uint8_t *dst, std::size_t bitsize);
+
 	private:
 		uint8_t *m_buffer;
 		std::size_t m_buffer_size;
diff --git a/include/ki/util/BitTypes.h b/include/ki/util/BitTypes.h
index 048a86d..379600a 100644
--- a/include/ki/util/BitTypes.h
+++ b/include/ki/util/BitTypes.h
@@ -37,9 +37,9 @@ namespace ki
 		>::type;
 
 		/**
-		* The integer type that can most efficiently store N bits
-		* without signedness.
-		*/
+		 * The integer type that can most efficiently store N bits
+	 	 * without signedness.
+		 */
 		using uint_type = typename std::conditional<
 			N <= 8,
 			uint8_t,
@@ -162,27 +162,27 @@ namespace ki
 	};
 
 	/**
-	* Represents a signed integer of N bits.
-	*/
+	 * Represents a signed integer of N bits.
+	 */
 	template <uint8_t N>
 	using bi = BitInteger<N, false>;
 
 	/**
-	* Represents an unsigned integer of N bits.
-	*/
+	 * Represents an unsigned integer of N bits.
+	 */
 	template <uint8_t N>
 	using bui = BitInteger<N, true>;
 
 	/**
-	* A utility to calculate the bitsize of a type.
-	*/
+	 * A utility to calculate the bitsize of a type.
+	 */
 	template <typename T, typename Enable = void>
 	struct bitsizeof
 	{
 		/**
-		* The number of bits a type will occupy if written to a BitStream.
-		* This does not reflect the size of the type in memory.
-		*/
+		 * The number of bits a type will occupy if written to a BitStream.
+		 * This does not reflect the size of the type in memory.
+		 */
 		static constexpr std::size_t value = sizeof(T) * 8;
 	};
 
@@ -206,4 +206,4 @@ namespace ki
 
 	template <uint8_t N, bool Unsigned>
 	struct is_integral<BitInteger<N, Unsigned>> : std::true_type {};
-}
\ No newline at end of file
+}