improve README.md

Author: philip82148

README.md

@@ -250,7 +250,7 @@ git clone https://github.com/philip82148/cpp-dump
 cd cpp-dump
 cmake -S . -B build # No configuration is needed because the library is header-only.
 sudo cmake --install build
-# (The cpp-dump folder can be removed after this.)
+# (The 'cpp-dump' folder can be removed after this.)
 ```
 
 Then
@@ -287,7 +287,7 @@ Then
 
 ## Configuration (as needed)
 
-If you want to customize the library, use the `CPP_DUMP_SET_OPTION_GLOBAL()` macro:
+If you want to customize the library, you can write the configuration code as follows:
 
 `custom-cpp-dump.hpp`
 
@@ -296,6 +296,9 @@ If you want to customize the library, use the `CPP_DUMP_SET_OPTION_GLOBAL()` mac
 #include "path/to/cpp-dump/cpp-dump.hpp"
 namespace cp = cpp_dump;
 CPP_DUMP_SET_OPTION_GLOBAL(max_line_width, 100);
+
+// To ensure proper instantiation of templates, it is recommended to include these in header files.
+// (These need to be included in at least one translation unit where cpp_dump(...) prints the type.)
 // CPP_DUMP_DEFINE_EXPORT_ENUM(...);
 // CPP_DUMP_DEFINE_EXPORT_OBJECT(...);
 // CPP_DUMP_DEFINE_EXPORT_OBJECT_GENERIC(...);