diff --git a/Library-Documentation.md b/Library-Documentation.md
index 326c316..24113da 100644
--- a/Library-Documentation.md
+++ b/Library-Documentation.md
@@ -618,6 +618,18 @@ If you're going to use it prebuilt, you can find it in the PMT releases. Or you
 
 ---
 
+### Macros
+There aren't many macros.
+
+```c++
+// You can take a look also at PMT functions for usage examples...
+#define COMMON_LAMBDA_PARAMS                                                   \
+  (const std::string &partition, const PartitionMap::BasicInf props)
+
+auto func = [] COMMON_LAMDA_PARAMS -> bool { /* Code... */ };
+```
+
+
 ### Namespaces
 
 #### PartitionMap
@@ -777,6 +789,13 @@ constexpr uint64_t LK_IMAGE = 0x00006B6C;
 // ... and more
 ```
 
+> There are also maps that keep these ready.
+```c++
+extern std::map<uint64_t, std::string> FileSystemMagicMap;
+extern std::map<uint64_t, std::string> AndroidMagicMap;
+extern std::map<uint64_t, std::string> MagicMap;
+```
+
 ---
 
 ### Compling and linking