diff --git a/src/open_viii/archive/ZZZ.hpp b/src/open_viii/archive/ZZZ.hpp
index a0e0a148..06d06d85 100644
--- a/src/open_viii/archive/ZZZ.hpp
+++ b/src/open_viii/archive/ZZZ.hpp
@@ -37,7 +37,8 @@ struct [[maybe_unused]] ZZZ
    * uint32_t count_{}; fallowed by array of file data
    */
   std::vector<FileData> m_data{};
-  [[nodiscard]] auto    load_data_from_file() const
+  [[nodiscard]] auto
+    load_data_from_file() const
   {
     std::vector<FileData> data{};
     if (m_path.has_extension()
@@ -58,7 +59,8 @@ struct [[maybe_unused]] ZZZ
     }
     return data;
   }
-  void sort_data()
+  void
+    sort_data()
   {
     std::ranges::sort(m_data, [](const FileData &left, const FileData &right) {
       const auto right_string = right.get_path_string();
@@ -66,19 +68,22 @@ struct [[maybe_unused]] ZZZ
       const auto right_size   = std::ranges::size(right_string);
       const auto left_size    = std::ranges::size(left_string);
       if (left_size == right_size) {
-        return left_string < right_string; //clangtidy wants < to be nullptr
+        return left_string < right_string;// clangtidy wants < to be nullptr
       }
       return left_size < right_size;
     });
     m_data.shrink_to_fit();
   }
+
 public:
-  constexpr static auto                      EXT = std::string_view(".zzz");
-  [[maybe_unused]] [[nodiscard]] const auto &data() const noexcept
+  constexpr static auto EXT = std::string_view(".zzz");
+  [[maybe_unused]] [[nodiscard]] const auto &
+    data() const noexcept
   {
     return m_data;
   }
-  [[maybe_unused]] [[nodiscard]] const auto &path() const noexcept
+  [[maybe_unused]] [[nodiscard]] const auto &
+    path() const noexcept
   {
     return m_path;
   }
@@ -112,15 +117,15 @@ struct [[maybe_unused]] ZZZ
     tmp.shrink_to_fit();
     return tmp;
   }
-  [[nodiscard]] friend std::ostream &operator<<(std::ostream &os,
-                                                const ZZZ &   data)
+  [[nodiscard]] friend std::ostream &
+    operator<<(std::ostream &os, const ZZZ &data)
   {
     return os << '{' << data.path().stem().string() << " zzz {"
               << std::ranges::size(data.data())
               << " File Entries from : " << data.path() << "}}";
   }
-  [[nodiscard]] friend std::ostream &operator<<(std::ostream &            os,
-                                                const std::optional<ZZZ> &data)
+  [[nodiscard]] friend std::ostream &
+    operator<<(std::ostream &os, const std::optional<ZZZ> &data)
   {
     if (data.has_value()) {
       return os << data.value();
@@ -145,8 +150,9 @@ struct [[maybe_unused]] ZZZ
   //    return vector;
   //  }
   template<std::invocable<std::vector<char>, std::string> UnaryFunctionT>
-  void execute_on(const std::initializer_list<std::string_view> &filename,
-                  const UnaryFunctionT &                         unary_function) const
+  void
+    execute_on(const std::initializer_list<std::string_view> &filename,
+               const UnaryFunctionT &unary_function) const
   {
     std::ranges::for_each(
       data(),
@@ -163,12 +169,31 @@ struct [[maybe_unused]] ZZZ
   requires((std::invocable<lambdaT, FIFLFS<false>> || std::invocable<lambdaT, std::vector<char>, std::string>)) void execute_with_nested(
     [[maybe_unused]] const std::initializer_list<std::string_view> &filename,
     [[maybe_unused]] const lambdaT                                  lambda,
-    [[maybe_unused]] const std::initializer_list<std::string_view> &nested_filename = {}) const
+    [[maybe_unused]] const std::initializer_list<std::string_view>
+      &nested_filename = {}) const
   {}
   explicit operator bool() const
   {
     return !std::ranges::empty(m_data);
   }
+
+  template<is_insertable_or_ostream T>
+  void
+    save(T &out, const ZZZ &in_zzz)
+  {
+    tl::write::append(
+      out, static_cast<std::uint32_t>(std::ranges::size(in_zzz.data())));
+    std::size_t sz = tl::algorithm::transform_reduce(
+      in_zzz.data(),
+      [](const FileData &d) {
+        return d.total_size();
+      },
+      std::plus<std::size_t>())+4U;
+//    for (const auto &d : in_zzz.data()) {
+//      append_entry(out, d);
+//    }
+    // in_data.output_all_remaining(out);
+  }
 };
 }// namespace open_viii::archive
 #endif// VIIIARCHIVE_ZZZ_HPP
\ No newline at end of file