diff --git a/types.txt b/types.txt
index f2d20bdf03..5e4fdbde3e 100644
--- a/types.txt
+++ b/types.txt
@@ -1,12 +1,50 @@
 L Size
 B Boolean
-P ConstStr255Param
-P ConstStr63Param
+P Str15
+P Str27
+P Str31
+P Str32
+P Str63
 P Str255 
+P ConstStr15Param
+P ConstStr27Param
+P ConstStr31Param
+P ConstStr32Param
+P ConstStr63Param
+P ConstStr255Param
 W CharParameter
 W OSErr
+L OSStatus
 W UInt16
 L UInt32
+W SInt16
+L SInt32
 P KeyMap
 W EventKind
 W EventMask
+W DialogItemIndex
+W DialogItemIndexZeroBased
+W DialogItemType
+W WindowPartCode
+W WindowDefPartCode
+W ControlPartCode
+L ResType
+L OSType
+L FourCharCode
+L ByteCount
+L ByteOffset
+P PhysicalAddress
+L Duration
+L OptionBits
+L ItemCount
+L PBVersion
+W LangCode
+W RegionCode
+L UnicodeScalarValue
+L UTF32Char
+W UniChar
+W UTF16Char
+B UTF8Char
+L UniCharCount
+B Byte
+B SignedByte