diff --git a/src/ZoneCodeGeneratorLib/Generating/Templates/ZoneWriteTemplate.cpp b/src/ZoneCodeGeneratorLib/Generating/Templates/ZoneWriteTemplate.cpp
index c4d96493..d7d29c95 100644
--- a/src/ZoneCodeGeneratorLib/Generating/Templates/ZoneWriteTemplate.cpp
+++ b/src/ZoneCodeGeneratorLib/Generating/Templates/ZoneWriteTemplate.cpp
@@ -306,7 +306,7 @@ namespace
         {
             std::ostringstream str;
             MakeTypeWrittenVarNameInternal(info->m_definition, str);
-            str << ".WithInnerOffset(";
+            str << ".AtOffset(";
 
             if (m_env.m_architecture_mismatch)
             {
@@ -791,7 +791,7 @@ namespace
                 return;
             }
 
-            LINEF("if (m_stream->ReusableShouldWrite({0}, {1}.WithInnerOffset({2})))",
+            LINEF("if (m_stream->ReusableShouldWrite({0}, {1}.AtOffset({2})))",
                   MakeMemberAccess(info, member, modifier),
                   MakeTypeWrittenVarName(info->m_definition),
                   MakeReusableInnerOffset(info->m_definition, member->m_member))
diff --git a/src/ZoneWriting/Game/IW3/ContentWriterIW3.cpp b/src/ZoneWriting/Game/IW3/ContentWriterIW3.cpp
index 34d9fbd6..e904524d 100644
--- a/src/ZoneWriting/Game/IW3/ContentWriterIW3.cpp
+++ b/src/ZoneWriting/Game/IW3/ContentWriterIW3.cpp
@@ -57,10 +57,7 @@ void ContentWriter::CreateXAssetList(XAssetList& xAssetList, MemoryManager& memo
 
 void ContentWriter::WriteScriptStringList(const bool atStreamStart)
 {
-    m_stream->PushBlock(XFILE_BLOCK_VIRTUAL);
-
-    if (atStreamStart)
-        varScriptStringListWritten = m_stream->Write(varScriptStringList);
+    assert(!atStreamStart);
 
     if (varScriptStringList->strings != nullptr)
     {
@@ -71,10 +68,8 @@ void ContentWriter::WriteScriptStringList(const bool atStreamStart)
 #ifdef ARCH_x86
         static_assert(offsetof(ScriptStringList, strings) == 4u);
 #endif
-        m_stream->MarkFollowing(varScriptStringListWritten.WithInnerOffset(4));
+        m_stream->MarkFollowing(varScriptStringListWritten.AtOffset(4));
     }
-
-    m_stream->PopBlock();
 }
 
 void ContentWriter::WriteXAsset(const bool atStreamStart)
@@ -86,7 +81,7 @@ void ContentWriter::WriteXAsset(const bool atStreamStart)
     case type_index:                                                                                                                                           \
     {                                                                                                                                                          \
         Writer_##typeName writer(varXAsset->header.headerEntry, m_zone, *m_stream);                                                                            \
-        writer.Write(varXAsset->header.headerEntry, varXAssetWritten.WithInnerOffset(4));                                                                      \
+        writer.Write(varXAsset->header.headerEntry, varXAssetWritten.AtOffset(4));                                                                             \
         break;                                                                                                                                                 \
     }
 #define SKIP_ASSET(type_index, typeName, headerEntry)                                                                                                          \
@@ -142,17 +137,27 @@ void ContentWriter::WriteXAssetArray(const bool atStreamStart, const size_t coun
 {
     assert(varXAsset != nullptr);
 
+#ifdef ARCH_x86
+    static_assert(sizeof(XAsset) == 8u);
+#endif
+
     if (atStreamStart)
+    {
+#ifdef ARCH_x86
         varXAssetWritten = m_stream->Write(varXAsset, count);
+#else
+        const auto fill = m_stream->WriteWithFill(8u * count);
+        varXAssetWritten = fill.Offset();
+
+        for (size_t index = 0; index < count; index++)
+            fill.Fill(varXAsset[index].type, 8u * index);
+#endif
+    }
 
     for (size_t index = 0; index < count; index++)
     {
         WriteXAsset(false);
         varXAsset++;
-
-#ifdef ARCH_x86
-        static_assert(sizeof(XAsset) == 8u);
-#endif
         varXAssetWritten.Inc(8u);
     }
 }
@@ -161,21 +166,34 @@ void ContentWriter::WriteContent(ZoneOutputStream& stream)
 {
     m_stream = &stream;
 
-    m_stream->PushBlock(XFILE_BLOCK_VIRTUAL);
-
     MemoryManager memory;
     XAssetList assetList{};
 
     CreateXAssetList(assetList, memory);
 
     varXAssetList = &assetList;
+
+#ifdef ARCH_x86
+    static_assert(sizeof(XAssetList) == 16);
+    static_assert(offsetof(XAssetList, assetCount) == 8u);
     varXAssetListWritten = m_stream->WriteDataRaw(&assetList, sizeof(assetList));
+#else
+    const auto fillAccessor = m_stream->WriteWithFill(16u);
+    varXAssetListWritten = fillAccessor.Offset();
+
+    varScriptStringList = &varXAssetList->stringList;
+    fillAccessor.Fill(varScriptStringList->count, 0u);
+
+    fillAccessor.Fill(varXAssetList->assetCount, 8u);
+#endif
+
+    m_stream->PushBlock(XFILE_BLOCK_VIRTUAL);
 
 #ifdef ARCH_x86
     static_assert(offsetof(XAssetList, stringList) == 0u);
 #endif
     varScriptStringList = &varXAssetList->stringList;
-    varScriptStringListWritten = varXAssetListWritten.WithInnerOffset(0);
+    varScriptStringListWritten = varXAssetListWritten.AtOffset(0);
     WriteScriptStringList(false);
 
     if (varXAssetList->assets != nullptr)
@@ -187,7 +205,7 @@ void ContentWriter::WriteContent(ZoneOutputStream& stream)
 #ifdef ARCH_x86
         static_assert(offsetof(XAssetList, assets) == 12u);
 #endif
-        m_stream->MarkFollowing(varXAssetListWritten.WithInnerOffset(12));
+        m_stream->MarkFollowing(varXAssetListWritten.AtOffset(12));
     }
 
     m_stream->PopBlock();
diff --git a/src/ZoneWriting/Game/IW4/ContentWriterIW4.cpp b/src/ZoneWriting/Game/IW4/ContentWriterIW4.cpp
index 1017573d..c0fbc85a 100644
--- a/src/ZoneWriting/Game/IW4/ContentWriterIW4.cpp
+++ b/src/ZoneWriting/Game/IW4/ContentWriterIW4.cpp
@@ -57,10 +57,7 @@ void ContentWriter::CreateXAssetList(XAssetList& xAssetList, MemoryManager& memo
 
 void ContentWriter::WriteScriptStringList(const bool atStreamStart)
 {
-    m_stream->PushBlock(XFILE_BLOCK_VIRTUAL);
-
-    if (atStreamStart)
-        varScriptStringListWritten = m_stream->Write(varScriptStringList);
+    assert(!atStreamStart);
 
     if (varScriptStringList->strings != nullptr)
     {
@@ -71,10 +68,8 @@ void ContentWriter::WriteScriptStringList(const bool atStreamStart)
 #ifdef ARCH_x86
         static_assert(offsetof(ScriptStringList, strings) == 4u);
 #endif
-        m_stream->MarkFollowing(varScriptStringListWritten.WithInnerOffset(4));
+        m_stream->MarkFollowing(varScriptStringListWritten.AtOffset(4));
     }
-
-    m_stream->PopBlock();
 }
 
 void ContentWriter::WriteXAsset(const bool atStreamStart)
@@ -86,7 +81,7 @@ void ContentWriter::WriteXAsset(const bool atStreamStart)
     case type_index:                                                                                                                                           \
     {                                                                                                                                                          \
         Writer_##typeName writer(varXAsset->header.headerEntry, m_zone, *m_stream);                                                                            \
-        writer.Write(varXAsset->header.headerEntry, varXAssetWritten.WithInnerOffset(4));                                                                      \
+        writer.Write(varXAsset->header.headerEntry, varXAssetWritten.AtOffset(4));                                                                             \
         break;                                                                                                                                                 \
     }
 #define SKIP_ASSET(type_index, typeName, headerEntry)                                                                                                          \
@@ -152,17 +147,27 @@ void ContentWriter::WriteXAssetArray(const bool atStreamStart, const size_t coun
 {
     assert(varXAsset != nullptr);
 
+#ifdef ARCH_x86
+    static_assert(sizeof(XAsset) == 8u);
+#endif
+
     if (atStreamStart)
+    {
+#ifdef ARCH_x86
         varXAssetWritten = m_stream->Write(varXAsset, count);
+#else
+        const auto fill = m_stream->WriteWithFill(8u * count);
+        varXAssetWritten = fill.Offset();
+
+        for (size_t index = 0; index < count; index++)
+            fill.Fill(varXAsset[index].type, 8u * index);
+#endif
+    }
 
     for (size_t index = 0; index < count; index++)
     {
         WriteXAsset(false);
         varXAsset++;
-
-#ifdef ARCH_x86
-        static_assert(sizeof(XAsset) == 8u);
-#endif
         varXAssetWritten.Inc(8u);
     }
 }
@@ -171,21 +176,34 @@ void ContentWriter::WriteContent(ZoneOutputStream& stream)
 {
     m_stream = &stream;
 
-    m_stream->PushBlock(XFILE_BLOCK_VIRTUAL);
-
     MemoryManager memory;
     XAssetList assetList{};
 
     CreateXAssetList(assetList, memory);
 
     varXAssetList = &assetList;
+
+#ifdef ARCH_x86
+    static_assert(sizeof(XAssetList) == 16);
+    static_assert(offsetof(XAssetList, assetCount) == 8u);
     varXAssetListWritten = m_stream->WriteDataRaw(&assetList, sizeof(assetList));
+#else
+    const auto fillAccessor = m_stream->WriteWithFill(16u);
+    varXAssetListWritten = fillAccessor.Offset();
+
+    varScriptStringList = &varXAssetList->stringList;
+    fillAccessor.Fill(varScriptStringList->count, 0u);
+
+    fillAccessor.Fill(varXAssetList->assetCount, 8u);
+#endif
+
+    m_stream->PushBlock(XFILE_BLOCK_VIRTUAL);
 
 #ifdef ARCH_x86
     static_assert(offsetof(XAssetList, stringList) == 0u);
 #endif
     varScriptStringList = &varXAssetList->stringList;
-    varScriptStringListWritten = varXAssetListWritten.WithInnerOffset(0);
+    varScriptStringListWritten = varXAssetListWritten.AtOffset(0);
     WriteScriptStringList(false);
 
     if (varXAssetList->assets != nullptr)
@@ -197,7 +215,7 @@ void ContentWriter::WriteContent(ZoneOutputStream& stream)
 #ifdef ARCH_x86
         static_assert(offsetof(XAssetList, assets) == 12u);
 #endif
-        m_stream->MarkFollowing(varXAssetListWritten.WithInnerOffset(12));
+        m_stream->MarkFollowing(varXAssetListWritten.AtOffset(12));
     }
 
     m_stream->PopBlock();
diff --git a/src/ZoneWriting/Game/IW5/ContentWriterIW5.cpp b/src/ZoneWriting/Game/IW5/ContentWriterIW5.cpp
index fef99578..d701903c 100644
--- a/src/ZoneWriting/Game/IW5/ContentWriterIW5.cpp
+++ b/src/ZoneWriting/Game/IW5/ContentWriterIW5.cpp
@@ -57,10 +57,7 @@ void ContentWriter::CreateXAssetList(XAssetList& xAssetList, MemoryManager& memo
 
 void ContentWriter::WriteScriptStringList(const bool atStreamStart)
 {
-    m_stream->PushBlock(XFILE_BLOCK_VIRTUAL);
-
-    if (atStreamStart)
-        varScriptStringListWritten = m_stream->Write(varScriptStringList);
+    assert(!atStreamStart);
 
     if (varScriptStringList->strings != nullptr)
     {
@@ -71,10 +68,8 @@ void ContentWriter::WriteScriptStringList(const bool atStreamStart)
 #ifdef ARCH_x86
         static_assert(offsetof(ScriptStringList, strings) == 4u);
 #endif
-        m_stream->MarkFollowing(varScriptStringListWritten.WithInnerOffset(4));
+        m_stream->MarkFollowing(varScriptStringListWritten.AtOffset(4));
     }
-
-    m_stream->PopBlock();
 }
 
 void ContentWriter::WriteXAsset(const bool atStreamStart)
@@ -86,7 +81,7 @@ void ContentWriter::WriteXAsset(const bool atStreamStart)
     case type_index:                                                                                                                                           \
     {                                                                                                                                                          \
         Writer_##typeName writer(varXAsset->header.headerEntry, m_zone, *m_stream);                                                                            \
-        writer.Write(varXAsset->header.headerEntry, varXAssetWritten.WithInnerOffset(4));                                                                      \
+        writer.Write(varXAsset->header.headerEntry, varXAssetWritten.AtOffset(4));                                                                             \
         break;                                                                                                                                                 \
     }
 #define SKIP_ASSET(type_index, typeName, headerEntry)                                                                                                          \
@@ -155,17 +150,27 @@ void ContentWriter::WriteXAssetArray(const bool atStreamStart, const size_t coun
 {
     assert(varXAsset != nullptr);
 
+#ifdef ARCH_x86
+    static_assert(sizeof(XAsset) == 8u);
+#endif
+
     if (atStreamStart)
+    {
+#ifdef ARCH_x86
         varXAssetWritten = m_stream->Write(varXAsset, count);
+#else
+        const auto fill = m_stream->WriteWithFill(8u * count);
+        varXAssetWritten = fill.Offset();
+
+        for (size_t index = 0; index < count; index++)
+            fill.Fill(varXAsset[index].type, 8u * index);
+#endif
+    }
 
     for (size_t index = 0; index < count; index++)
     {
         WriteXAsset(false);
         varXAsset++;
-
-#ifdef ARCH_x86
-        static_assert(sizeof(XAsset) == 8u);
-#endif
         varXAssetWritten.Inc(8u);
     }
 }
@@ -174,21 +179,34 @@ void ContentWriter::WriteContent(ZoneOutputStream& stream)
 {
     m_stream = &stream;
 
-    m_stream->PushBlock(XFILE_BLOCK_VIRTUAL);
-
     MemoryManager memory;
     XAssetList assetList{};
 
     CreateXAssetList(assetList, memory);
 
     varXAssetList = &assetList;
+
+#ifdef ARCH_x86
+    static_assert(sizeof(XAssetList) == 16);
+    static_assert(offsetof(XAssetList, assetCount) == 8u);
     varXAssetListWritten = m_stream->WriteDataRaw(&assetList, sizeof(assetList));
+#else
+    const auto fillAccessor = m_stream->WriteWithFill(16u);
+    varXAssetListWritten = fillAccessor.Offset();
+
+    varScriptStringList = &varXAssetList->stringList;
+    fillAccessor.Fill(varScriptStringList->count, 0u);
+
+    fillAccessor.Fill(varXAssetList->assetCount, 8u);
+#endif
+
+    m_stream->PushBlock(XFILE_BLOCK_VIRTUAL);
 
 #ifdef ARCH_x86
     static_assert(offsetof(XAssetList, stringList) == 0u);
 #endif
     varScriptStringList = &varXAssetList->stringList;
-    varScriptStringListWritten = varXAssetListWritten.WithInnerOffset(0);
+    varScriptStringListWritten = varXAssetListWritten.AtOffset(0);
     WriteScriptStringList(false);
 
     if (varXAssetList->assets != nullptr)
@@ -200,7 +218,7 @@ void ContentWriter::WriteContent(ZoneOutputStream& stream)
 #ifdef ARCH_x86
         static_assert(offsetof(XAssetList, assets) == 12u);
 #endif
-        m_stream->MarkFollowing(varXAssetListWritten.WithInnerOffset(12));
+        m_stream->MarkFollowing(varXAssetListWritten.AtOffset(12));
     }
 
     m_stream->PopBlock();
diff --git a/src/ZoneWriting/Game/T5/ContentWriterT5.cpp b/src/ZoneWriting/Game/T5/ContentWriterT5.cpp
index 9814fe6d..253a022a 100644
--- a/src/ZoneWriting/Game/T5/ContentWriterT5.cpp
+++ b/src/ZoneWriting/Game/T5/ContentWriterT5.cpp
@@ -57,10 +57,7 @@ void ContentWriter::CreateXAssetList(XAssetList& xAssetList, MemoryManager& memo
 
 void ContentWriter::WriteScriptStringList(const bool atStreamStart)
 {
-    m_stream->PushBlock(XFILE_BLOCK_VIRTUAL);
-
-    if (atStreamStart)
-        varScriptStringListWritten = m_stream->Write(varScriptStringList);
+    assert(!atStreamStart);
 
     if (varScriptStringList->strings != nullptr)
     {
@@ -71,10 +68,8 @@ void ContentWriter::WriteScriptStringList(const bool atStreamStart)
 #ifdef ARCH_x86
         static_assert(offsetof(ScriptStringList, strings) == 4u);
 #endif
-        m_stream->MarkFollowing(varScriptStringListWritten.WithInnerOffset(4));
+        m_stream->MarkFollowing(varScriptStringListWritten.AtOffset(4));
     }
-
-    m_stream->PopBlock();
 }
 
 void ContentWriter::WriteXAsset(const bool atStreamStart)
@@ -86,7 +81,7 @@ void ContentWriter::WriteXAsset(const bool atStreamStart)
     case type_index:                                                                                                                                           \
     {                                                                                                                                                          \
         Writer_##typeName writer(varXAsset->header.headerEntry, m_zone, *m_stream);                                                                            \
-        writer.Write(varXAsset->header.headerEntry, varXAssetWritten.WithInnerOffset(4));                                                                      \
+        writer.Write(varXAsset->header.headerEntry, varXAssetWritten.AtOffset(4));                                                                             \
         break;                                                                                                                                                 \
     }
 #define SKIP_ASSET(type_index, typeName, headerEntry)                                                                                                          \
@@ -148,17 +143,27 @@ void ContentWriter::WriteXAssetArray(const bool atStreamStart, const size_t coun
 {
     assert(varXAsset != nullptr);
 
+#ifdef ARCH_x86
+    static_assert(sizeof(XAsset) == 8u);
+#endif
+
     if (atStreamStart)
+    {
+#ifdef ARCH_x86
         varXAssetWritten = m_stream->Write(varXAsset, count);
+#else
+        const auto fill = m_stream->WriteWithFill(8u * count);
+        varXAssetWritten = fill.Offset();
+
+        for (size_t index = 0; index < count; index++)
+            fill.Fill(varXAsset[index].type, 8u * index);
+#endif
+    }
 
     for (size_t index = 0; index < count; index++)
     {
         WriteXAsset(false);
         varXAsset++;
-
-#ifdef ARCH_x86
-        static_assert(sizeof(XAsset) == 8u);
-#endif
         varXAssetWritten.Inc(8u);
     }
 }
@@ -167,21 +172,34 @@ void ContentWriter::WriteContent(ZoneOutputStream& stream)
 {
     m_stream = &stream;
 
-    m_stream->PushBlock(XFILE_BLOCK_VIRTUAL);
-
     MemoryManager memory;
     XAssetList assetList{};
 
     CreateXAssetList(assetList, memory);
 
     varXAssetList = &assetList;
+
+#ifdef ARCH_x86
+    static_assert(sizeof(XAssetList) == 16);
+    static_assert(offsetof(XAssetList, assetCount) == 8u);
     varXAssetListWritten = m_stream->WriteDataRaw(&assetList, sizeof(assetList));
+#else
+    const auto fillAccessor = m_stream->WriteWithFill(16u);
+    varXAssetListWritten = fillAccessor.Offset();
+
+    varScriptStringList = &varXAssetList->stringList;
+    fillAccessor.Fill(varScriptStringList->count, 0u);
+
+    fillAccessor.Fill(varXAssetList->assetCount, 8u);
+#endif
+
+    m_stream->PushBlock(XFILE_BLOCK_VIRTUAL);
 
 #ifdef ARCH_x86
     static_assert(offsetof(XAssetList, stringList) == 0u);
 #endif
     varScriptStringList = &varXAssetList->stringList;
-    varScriptStringListWritten = varXAssetListWritten.WithInnerOffset(0);
+    varScriptStringListWritten = varXAssetListWritten.AtOffset(0);
     WriteScriptStringList(false);
 
     if (varXAssetList->assets != nullptr)
@@ -193,7 +211,7 @@ void ContentWriter::WriteContent(ZoneOutputStream& stream)
 #ifdef ARCH_x86
         static_assert(offsetof(XAssetList, assets) == 12u);
 #endif
-        m_stream->MarkFollowing(varXAssetListWritten.WithInnerOffset(12));
+        m_stream->MarkFollowing(varXAssetListWritten.AtOffset(12));
     }
 
     m_stream->PopBlock();
diff --git a/src/ZoneWriting/Game/T6/ContentWriterT6.cpp b/src/ZoneWriting/Game/T6/ContentWriterT6.cpp
index 3f40d075..14af265a 100644
--- a/src/ZoneWriting/Game/T6/ContentWriterT6.cpp
+++ b/src/ZoneWriting/Game/T6/ContentWriterT6.cpp
@@ -60,10 +60,7 @@ void ContentWriter::CreateXAssetList(XAssetList& xAssetList, MemoryManager& memo
 
 void ContentWriter::WriteScriptStringList(const bool atStreamStart)
 {
-    m_stream->PushBlock(XFILE_BLOCK_VIRTUAL);
-
-    if (atStreamStart)
-        varScriptStringListWritten = m_stream->Write(varScriptStringList);
+    assert(!atStreamStart);
 
     if (varScriptStringList->strings != nullptr)
     {
@@ -74,10 +71,8 @@ void ContentWriter::WriteScriptStringList(const bool atStreamStart)
 #ifdef ARCH_x86
         static_assert(offsetof(ScriptStringList, strings) == 4u);
 #endif
-        m_stream->MarkFollowing(varScriptStringListWritten.WithInnerOffset(4));
+        m_stream->MarkFollowing(varScriptStringListWritten.AtOffset(4));
     }
-
-    m_stream->PopBlock();
 }
 
 void ContentWriter::WriteXAsset(const bool atStreamStart)
@@ -89,7 +84,7 @@ void ContentWriter::WriteXAsset(const bool atStreamStart)
     case type_index:                                                                                                                                           \
     {                                                                                                                                                          \
         Writer_##typeName writer(varXAsset->header.headerEntry, m_zone, *m_stream);                                                                            \
-        writer.Write(varXAsset->header.headerEntry, varXAssetWritten.WithInnerOffset(4));                                                                      \
+        writer.Write(varXAsset->header.headerEntry, varXAssetWritten.AtOffset(4));                                                                             \
         break;                                                                                                                                                 \
     }
 
@@ -162,18 +157,27 @@ void ContentWriter::WriteXAsset(const bool atStreamStart)
 void ContentWriter::WriteXAssetArray(const bool atStreamStart, const size_t count)
 {
     assert(varXAsset != nullptr);
+#ifdef ARCH_x86
+    static_assert(sizeof(XAsset) == 8u);
+#endif
 
     if (atStreamStart)
+    {
+#ifdef ARCH_x86
         varXAssetWritten = m_stream->Write(varXAsset, count);
+#else
+        const auto fill = m_stream->WriteWithFill(8u * count);
+        varXAssetWritten = fill.Offset();
+
+        for (size_t index = 0; index < count; index++)
+            fill.Fill(varXAsset[index].type, 8u * index);
+#endif
+    }
 
     for (size_t index = 0; index < count; index++)
     {
         WriteXAsset(false);
         varXAsset++;
-
-#ifdef ARCH_x86
-        static_assert(sizeof(XAsset) == 8u);
-#endif
         varXAssetWritten.Inc(8u);
     }
 }
@@ -182,21 +186,36 @@ void ContentWriter::WriteContent(ZoneOutputStream& stream)
 {
     m_stream = &stream;
 
-    m_stream->PushBlock(XFILE_BLOCK_VIRTUAL);
-
     MemoryManager memory;
     XAssetList assetList{};
 
     CreateXAssetList(assetList, memory);
 
     varXAssetList = &assetList;
+
+#ifdef ARCH_x86
+    static_assert(sizeof(XAssetList) == 24);
+    static_assert(offsetof(XAssetList, dependCount) == 8u);
+    static_assert(offsetof(XAssetList, assetCount) == 16u);
     varXAssetListWritten = m_stream->WriteDataRaw(&assetList, sizeof(assetList));
+#else
+    const auto fillAccessor = m_stream->WriteWithFill(24u);
+    varXAssetListWritten = fillAccessor.Offset();
+
+    varScriptStringList = &varXAssetList->stringList;
+    fillAccessor.Fill(varScriptStringList->count, 0u);
+
+    fillAccessor.Fill(varXAssetList->dependCount, 8u);
+    fillAccessor.Fill(varXAssetList->assetCount, 16u);
+#endif
+
+    m_stream->PushBlock(XFILE_BLOCK_VIRTUAL);
 
 #ifdef ARCH_x86
     static_assert(offsetof(XAssetList, stringList) == 0u);
 #endif
     varScriptStringList = &varXAssetList->stringList;
-    varScriptStringListWritten = varXAssetListWritten.WithInnerOffset(0);
+    varScriptStringListWritten = varXAssetListWritten.AtOffset(0);
     WriteScriptStringList(false);
 
     if (varXAssetList->depends != nullptr)
@@ -208,7 +227,7 @@ void ContentWriter::WriteContent(ZoneOutputStream& stream)
 #ifdef ARCH_x86
         static_assert(offsetof(XAssetList, depends) == 12u);
 #endif
-        m_stream->MarkFollowing(varXAssetListWritten.WithInnerOffset(12));
+        m_stream->MarkFollowing(varXAssetListWritten.AtOffset(12));
     }
 
     if (varXAssetList->assets != nullptr)
@@ -220,7 +239,7 @@ void ContentWriter::WriteContent(ZoneOutputStream& stream)
 #ifdef ARCH_x86
         static_assert(offsetof(XAssetList, assets) == 20u);
 #endif
-        m_stream->MarkFollowing(varXAssetListWritten.WithInnerOffset(20));
+        m_stream->MarkFollowing(varXAssetListWritten.AtOffset(20));
     }
 
     m_stream->PopBlock();
diff --git a/src/ZoneWriting/Writing/ContentWriterBase.cpp b/src/ZoneWriting/Writing/ContentWriterBase.cpp
index b4b52a42..e9a596fc 100644
--- a/src/ZoneWriting/Writing/ContentWriterBase.cpp
+++ b/src/ZoneWriting/Writing/ContentWriterBase.cpp
@@ -23,7 +23,7 @@ void ContentWriterBase::WriteXString(const bool atStreamStart)
     if (atStreamStart)
     {
         assert(varXString != nullptr);
-        varXStringWritten = m_stream->Write<const char*>(varXString);
+        varXStringWritten = m_stream->WriteWithFill(m_stream->GetPointerByteCount()).Offset();
     }
 
     assert(varXStringWritten.Offset() != nullptr);
@@ -40,10 +40,11 @@ void ContentWriterBase::WriteXString(const bool atStreamStart)
 
 void ContentWriterBase::WriteXStringArray(const bool atStreamStart, const size_t count)
 {
+    const auto pointerByteCount = m_stream->GetPointerByteCount();
     if (atStreamStart)
     {
         assert(varXString != nullptr);
-        varXStringWritten = m_stream->Write<const char*>(varXString, count);
+        varXStringWritten = m_stream->WriteWithFill(pointerByteCount * count).Offset();
     }
 
     assert(varXStringWritten.Offset() != nullptr);
@@ -52,6 +53,6 @@ void ContentWriterBase::WriteXStringArray(const bool atStreamStart, const size_t
     {
         WriteXString(false);
         varXString++;
-        varXStringWritten.Inc(m_stream->GetPointerByteCount());
+        varXStringWritten.Inc(pointerByteCount);
     }
 }
diff --git a/src/ZoneWriting/Zone/Stream/ZoneOutputStream.cpp b/src/ZoneWriting/Zone/Stream/ZoneOutputStream.cpp
index 42952a21..e89523b4 100644
--- a/src/ZoneWriting/Zone/Stream/ZoneOutputStream.cpp
+++ b/src/ZoneWriting/Zone/Stream/ZoneOutputStream.cpp
@@ -14,9 +14,6 @@
 
 namespace
 {
-    inline const auto PTR_FOLLOWING = reinterpret_cast<void*>(-1);
-    inline const auto PTR_INSERT = reinterpret_cast<void*>(-2);
-
     class ReusableEntry
     {
     public:
@@ -182,6 +179,35 @@ namespace
             WriteDataInBlock(src, len + 1);
         }
 
+        ZoneStreamFillWriteAccessor WriteWithFill(const size_t size) override
+        {
+            // If no block has been pushed, load raw
+            if (!m_block_stack.empty())
+            {
+                const auto* block = m_block_stack.top();
+
+                void* result = nullptr;
+                switch (block->m_type)
+                {
+                case XBlockType::BLOCK_TYPE_TEMP:
+                case XBlockType::BLOCK_TYPE_NORMAL:
+                    result = m_zone_data.GetBufferOfSize(size);
+                    break;
+
+                case XBlockType::BLOCK_TYPE_RUNTIME:
+                case XBlockType::BLOCK_TYPE_DELAY:
+                    assert(false);
+                    break;
+                }
+
+                IncBlockPos(size);
+
+                return ZoneStreamFillWriteAccessor(result, size);
+            }
+
+            return ZoneStreamFillWriteAccessor(m_zone_data.GetBufferOfSize(size), size);
+        }
+
         void MarkFollowing(const ZoneOutputOffset outputOffset) override
         {
             assert(!m_block_stack.empty());
@@ -305,9 +331,9 @@ ZoneOutputOffset::ZoneOutputOffset(void* offset)
 {
 }
 
-void* ZoneOutputOffset::Offset() const
+ZoneOutputOffset ZoneOutputOffset::AtOffset(const size_t innerOffset) const
 {
-    return m_offset;
+    return ZoneOutputOffset(static_cast<char*>(m_offset) + innerOffset);
 }
 
 void ZoneOutputOffset::Inc(const size_t size)
@@ -315,9 +341,9 @@ void ZoneOutputOffset::Inc(const size_t size)
     m_offset = static_cast<void*>(static_cast<char*>(m_offset) + size);
 }
 
-ZoneOutputOffset ZoneOutputOffset::WithInnerOffset(const size_t innerOffset) const
+void* ZoneOutputOffset::Offset() const
 {
-    return ZoneOutputOffset(static_cast<char*>(m_offset) + innerOffset);
+    return m_offset;
 }
 
 std::unique_ptr<ZoneOutputStream>
@@ -325,3 +351,19 @@ std::unique_ptr<ZoneOutputStream>
 {
     return std::make_unique<InMemoryZoneOutputStream>(pointerBitCount, blockBitCount, blocks, insertBlock, zoneData);
 }
+
+ZoneStreamFillWriteAccessor::ZoneStreamFillWriteAccessor(void* blockBuffer, const size_t bufferSize)
+    : m_block_buffer(blockBuffer),
+      m_buffer_size(bufferSize)
+{
+}
+
+ZoneStreamFillWriteAccessor ZoneStreamFillWriteAccessor::AtOffset(const size_t offset) const
+{
+    return ZoneStreamFillWriteAccessor(static_cast<char*>(m_block_buffer) + offset, m_buffer_size - offset);
+}
+
+ZoneOutputOffset ZoneStreamFillWriteAccessor::Offset() const
+{
+    return ZoneOutputOffset(m_block_buffer);
+}
diff --git a/src/ZoneWriting/Zone/Stream/ZoneOutputStream.h b/src/ZoneWriting/Zone/Stream/ZoneOutputStream.h
index 3b6aa2ff..46e8e472 100644
--- a/src/ZoneWriting/Zone/Stream/ZoneOutputStream.h
+++ b/src/ZoneWriting/Zone/Stream/ZoneOutputStream.h
@@ -4,6 +4,7 @@
 #include "Zone/Stream/IZoneStream.h"
 #include "Zone/XBlock.h"
 
+#include <cassert>
 #include <cstddef>
 #include <memory>
 #include <typeindex>
@@ -16,14 +17,41 @@ public:
     ZoneOutputOffset();
     explicit ZoneOutputOffset(void* offset);
 
-    [[nodiscard]] void* Offset() const;
+    [[nodiscard]] ZoneOutputOffset AtOffset(size_t innerOffset) const;
     void Inc(size_t size);
-    [[nodiscard]] ZoneOutputOffset WithInnerOffset(size_t innerOffset) const;
+    [[nodiscard]] void* Offset() const;
 
 private:
     void* m_offset;
 };
 
+class ZoneStreamFillWriteAccessor
+{
+public:
+    ZoneStreamFillWriteAccessor(void* blockBuffer, size_t bufferSize);
+
+    [[nodiscard]] ZoneStreamFillWriteAccessor AtOffset(size_t offset) const;
+    [[nodiscard]] ZoneOutputOffset Offset() const;
+
+    template<typename T> void Fill(const T& value, const size_t offset) const
+    {
+        assert(offset + sizeof(T) <= m_buffer_size);
+
+        *reinterpret_cast<T*>(static_cast<char*>(m_block_buffer) + offset) = value;
+    }
+
+    template<typename T, size_t S> void FillArray(T (&value)[S], const size_t offset) const
+    {
+        assert(offset + sizeof(T) * S <= m_buffer_size);
+
+        std::memcpy(static_cast<char*>(m_block_buffer) + offset, value, sizeof(T) * S);
+    }
+
+private:
+    void* m_block_buffer;
+    size_t m_buffer_size;
+};
+
 class ZoneOutputStream : public IZoneStream
 {
 public:
@@ -59,6 +87,8 @@ public:
     virtual void IncBlockPos(size_t size) = 0;
     virtual void WriteNullTerminated(const void* dst) = 0;
 
+    virtual ZoneStreamFillWriteAccessor WriteWithFill(size_t size) = 0;
+
     virtual bool ReusableShouldWrite(void* pPtr, ZoneOutputOffset outputOffset, size_t size, std::type_index type) = 0;
     virtual void ReusableAddOffset(void* ptr, size_t size, size_t count, std::type_index type) = 0;
     virtual void MarkFollowing(ZoneOutputOffset offset) = 0;