Here is a list of all files with brief descriptions:

3264_Template.asm
_asmop.asm
_bswap.asm
_gradcolor.asm
_Internal.cpp
_Internal.h
BldInfo.h	Build feedback definitions.
Common.cpp
Common.h	Common include; Added types, small "ubiquitous" utilities, et c
Debug.cpp
Debug.h	Debug and error handling support
DlgPlate.cpp
DlgPlate.h
DynArray.cpp
DynArray.h
FileDir.cpp
FileDir.h
FileExtd.h
Fixed.hpp
GdiUtil.cpp
Hardlink.cpp
IniFile.cpp
IniFile.h
InputEmu.cpp
InputEmu.h
IoUtil.cpp
KernelUtil.cpp
LargeInt.cpp
LargeInt.h
ListCls.cpp
ListClsEx.cpp
ListEx.h
ListFunc.c
ListFunc.h
MemFunc.cpp
MemFunc.h
MemStrm.cpp
MemStrm.h
MsgTbl.cpp
NtFunc.cpp
NtFunc.h
NtTypes.h
RegFunc.cpp
RegFunc.h
ReparsePnt.cpp
ResFont.cpp
ResFont.h
RingBuffer.cpp
RingBuffer.h
SecUtil.cpp
ShellUtil.cpp
StdDlg.cpp
StdDlg.h
StrFunc.cpp
StrFunc.h
SyncObj.cpp
SyncObj.h
SysImgList.cpp
SysImgList.h
TernaryOp.h
Thread.cpp
Thread.h
TTFFile.h
uLib/Types.h
Types.h
uLib.h
UmLsa.cpp
UmLsa.h
UserUtil.cpp
UtilFunc.cpp
UtilFunc.h
VerInfo.cpp
VerInfo.h
Xform.cpp