Revert BaseTools: PYTHON3 migration

This reverts commit 6693f35..
678f851.

Python3 migration is the fundamental change. It requires every developer
to install Python3. Before this migration, the well communication and wide
verification must be done. But now, most people is not aware of this change,
and not try it. So, Python3 migration is reverted and be moved to edk2-staging
Python3 branch for the edk2 user evaluation.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Liming Gao <liming.gao@intel.com>

BaseTools/Bin/CYGWIN_NT-5.1-i686/Ecc

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a $PYTHON3 command is available, use it in preference to python
-if command -v $PYTHON3 >/dev/null 2>&1; then
-    python_exe=$PYTHON3
+# If a python2 command is available, use it in preference to python
+if command -v python2 >/dev/null 2>&1; then
+    python_exe=python2
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here

BaseTools/Bin/CYGWIN_NT-5.1-i686/GenDepex

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a $PYTHON3 command is available, use it in preference to python
-if command -v $PYTHON3 >/dev/null 2>&1; then
-    python_exe=$PYTHON3
+# If a python2 command is available, use it in preference to python
+if command -v python2 >/dev/null 2>&1; then
+    python_exe=python2
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here

BaseTools/Bin/CYGWIN_NT-5.1-i686/GenFds

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a $PYTHON3 command is available, use it in preference to python
-if command -v $PYTHON3 >/dev/null 2>&1; then
-    python_exe=$PYTHON3
+# If a python2 command is available, use it in preference to python
+if command -v python2 >/dev/null 2>&1; then
+    python_exe=python2
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here

BaseTools/Bin/CYGWIN_NT-5.1-i686/TargetTool

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a $PYTHON3 command is available, use it in preference to python
-if command -v $PYTHON3 >/dev/null 2>&1; then
-    python_exe=$PYTHON3
+# If a python2 command is available, use it in preference to python
+if command -v python2 >/dev/null 2>&1; then
+    python_exe=python2
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here

BaseTools/Bin/CYGWIN_NT-5.1-i686/Trim

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a $PYTHON3 command is available, use it in preference to python
-if command -v $PYTHON3 >/dev/null 2>&1; then
-    python_exe=$PYTHON3
+# If a python2 command is available, use it in preference to python
+if command -v python2 >/dev/null 2>&1; then
+    python_exe=python2
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here

BaseTools/Bin/CYGWIN_NT-5.1-i686/build

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a $PYTHON3 command is available, use it in preference to python
-if command -v $PYTHON3 >/dev/null 2>&1; then
-    python_exe=$PYTHON3
+# If a python2 command is available, use it in preference to python
+if command -v python2 >/dev/null 2>&1; then
+    python_exe=python2
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here

BaseTools/BinWrappers/PosixLike/BPDG

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a PYTHON3 command is available, use it in preference to python
-if command -v $PYTHON3 >/dev/null 2>&1; then
-    python_exe=$PYTHON3
+# If a python2 command is available, use it in preference to python
+if command -v python2 >/dev/null 2>&1; then
+    python_exe=python2
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here

BaseTools/BinWrappers/PosixLike/Ecc

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a PYTHON3 command is available, use it in preference to python
-if command -v $PYTHON3 >/dev/null 2>&1; then
-    python_exe=$PYTHON3
+# If a python2 command is available, use it in preference to python
+if command -v python2 >/dev/null 2>&1; then
+    python_exe=python2
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here

BaseTools/BinWrappers/PosixLike/GenDepex

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a PYTHON3 command is available, use it in preference to python
-if command -v $PYTHON3 >/dev/null 2>&1; then
-    python_exe=$PYTHON3
+# If a python2 command is available, use it in preference to python
+if command -v python2 >/dev/null 2>&1; then
+    python_exe=python2
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here

BaseTools/BinWrappers/PosixLike/GenFds

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a PYTHON3 command is available, use it in preference to python
-if command -v $PYTHON3 >/dev/null 2>&1; then
-    python_exe=$PYTHON3
+# If a python2 command is available, use it in preference to python
+if command -v python2 >/dev/null 2>&1; then
+    python_exe=python2
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here

BaseTools/BinWrappers/PosixLike/GenPatchPcdTable

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a PYTHON3 command is available, use it in preference to python
-if command -v $PYTHON3 >/dev/null 2>&1; then
-    python_exe=$PYTHON3
+# If a python2 command is available, use it in preference to python
+if command -v python2 >/dev/null 2>&1; then
+    python_exe=python2
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here

BaseTools/BinWrappers/PosixLike/GenerateCapsule

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a PYTHON3 command is available, use it in preference to python
-if command -v $PYTHON3 >/dev/null 2>&1; then
-    python_exe=$PYTHON3
+# If a python2 command is available, use it in preference to python
+if command -v python2 >/dev/null 2>&1; then
+    python_exe=python2
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here

BaseTools/BinWrappers/PosixLike/PatchPcdValue

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a PYTHON3 command is available, use it in preference to python
-if command -v $PYTHON3 >/dev/null 2>&1; then
-    python_exe=$PYTHON3
+# If a python2 command is available, use it in preference to python
+if command -v python2 >/dev/null 2>&1; then
+    python_exe=python2
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here

BaseTools/BinWrappers/PosixLike/Pkcs7Sign

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a PYTHON3 command is available, use it in preference to python
-if command -v $PYTHON3 >/dev/null 2>&1; then
-    python_exe=$PYTHON3
+# If a python2 command is available, use it in preference to python
+if command -v python2 >/dev/null 2>&1; then
+    python_exe=python2
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here

BaseTools/BinWrappers/PosixLike/Rsa2048Sha256GenerateKeys

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a PYTHON3 command is available, use it in preference to python
-if command -v $PYTHON3 >/dev/null 2>&1; then
-    python_exe=$PYTHON3
+# If a python2 command is available, use it in preference to python
+if command -v python2 >/dev/null 2>&1; then
+    python_exe=python2
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here

BaseTools/BinWrappers/PosixLike/Rsa2048Sha256Sign

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a PYTHON3 command is available, use it in preference to python
-if command -v $PYTHON3 >/dev/null 2>&1; then
-    python_exe=$PYTHON3
+# If a python2 command is available, use it in preference to python
+if command -v python2 >/dev/null 2>&1; then
+    python_exe=python2
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here

BaseTools/BinWrappers/PosixLike/TargetTool

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a PYTHON3 command is available, use it in preference to python
-if command -v $PYTHON3 >/dev/null 2>&1; then
-    python_exe=$PYTHON3
+# If a python2 command is available, use it in preference to python
+if command -v python2 >/dev/null 2>&1; then
+    python_exe=python2
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here

BaseTools/BinWrappers/PosixLike/Trim

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a PYTHON3 command is available, use it in preference to python
-if command -v $PYTHON3 >/dev/null 2>&1; then
-    python_exe=$PYTHON3
+# If a python2 command is available, use it in preference to python
+if command -v python2 >/dev/null 2>&1; then
+    python_exe=python2
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here

BaseTools/BinWrappers/PosixLike/UPT

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a PYTHON3 command is available, use it in preference to python
-if command -v $PYTHON3 >/dev/null 2>&1; then
-    python_exe=$PYTHON3
+# If a python2 command is available, use it in preference to python
+if command -v python2 >/dev/null 2>&1; then
+    python_exe=python2
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here

BaseTools/BinWrappers/PosixLike/build

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
 
-# If a PYTHON3 command is available, use it in preference to python
-if command -v $PYTHON3 >/dev/null 2>&1; then
-    python_exe=$PYTHON3
+# If a python2 command is available, use it in preference to python
+if command -v python2 >/dev/null 2>&1; then
+    python_exe=python2
 fi
 
 full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here

BaseTools/BinWrappers/WindowsLike/BPDG.bat

@@ -1,4 +1,4 @@
 @setlocal
 @set ToolName=%~n0%
 @set PYTHONPATH=%PYTHONPATH%;%BASE_TOOLS_PATH%\Source\Python
-@%PYTHON3% -m %ToolName%.%ToolName% %*
+@%PYTHON_HOME%\python.exe -m %ToolName%.%ToolName% %*

BaseTools/BinWrappers/WindowsLike/Ecc.bat

@@ -1,4 +1,4 @@
 @setlocal
 @set ToolName=%~n0%
 @set PYTHONPATH=%PYTHONPATH%;%BASE_TOOLS_PATH%\Source\Python
-@%PYTHON3% -m %ToolName%.EccMain %*
+@%PYTHON_HOME%\python.exe -m %ToolName%.EccMain %*

BaseTools/BinWrappers/WindowsLike/GenDepex.bat

@@ -1,3 +1,3 @@
 @setlocal
 @set ToolName=%~n0%
-@%PYTHON3% %BASE_TOOLS_PATH%\Source\Python\AutoGen\%ToolName%.py %*
+@%PYTHON_HOME%\python.exe %BASE_TOOLS_PATH%\Source\Python\AutoGen\%ToolName%.py %*

BaseTools/BinWrappers/WindowsLike/GenFds.bat

@@ -1,4 +1,4 @@
 @setlocal
 @set ToolName=%~n0%
 @set PYTHONPATH=%PYTHONPATH%;%BASE_TOOLS_PATH%\Source\Python
-@%PYTHON3% -m %ToolName%.%ToolName% %*
+@%PYTHON_HOME%\python.exe -m %ToolName%.%ToolName% %*

BaseTools/BinWrappers/WindowsLike/GenPatchPcdTable.bat

@@ -1,3 +1,3 @@
 @setlocal
 @set ToolName=%~n0%
-@%PYTHON3% %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
+@%PYTHON_HOME%\python.exe %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*

BaseTools/BinWrappers/WindowsLike/GenerateCapsule.bat

@@ -1 +1 @@
-@%PYTHON3% %BASE_TOOLS_PATH%\Source\Python\Capsule\GenerateCapsule.py %*
+@%PYTHON_HOME%\python.exe %BASE_TOOLS_PATH%\Source\Python\Capsule\GenerateCapsule.py %*

BaseTools/BinWrappers/WindowsLike/PatchPcdValue.bat

@@ -1,3 +1,3 @@
 @setlocal
 @set ToolName=%~n0%
-@%PYTHON3% %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
+@%PYTHON_HOME%\python.exe %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*

BaseTools/BinWrappers/WindowsLike/Pkcs7Sign.bat

@@ -1,3 +1,3 @@
 @setlocal
 @set ToolName=%~n0%
-@%PYTHON3% %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
+@%PYTHON_HOME%\python.exe %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*

BaseTools/BinWrappers/WindowsLike/Rsa2048Sha256GenerateKeys.bat

@@ -1 +1 @@
-@%PYTHON3% %BASE_TOOLS_PATH%\Source\Python\Rsa2048Sha256Sign\Rsa2048Sha256GenerateKeys.py %*
+@%PYTHON_HOME%\python.exe %BASE_TOOLS_PATH%\Source\Python\Rsa2048Sha256Sign\Rsa2048Sha256GenerateKeys.py %*

BaseTools/BinWrappers/WindowsLike/Rsa2048Sha256Sign.bat

@@ -1,3 +1,3 @@
 @setlocal
 @set ToolName=%~n0%
-@%PYTHON3% %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
+@%PYTHON_HOME%\python.exe %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*

BaseTools/BinWrappers/WindowsLike/TargetTool.bat

@@ -1,3 +1,3 @@
 @setlocal
 @set ToolName=%~n0%
-@%PYTHON3% %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
+@%PYTHON_HOME%\python.exe %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*

BaseTools/BinWrappers/WindowsLike/Trim.bat

@@ -1,3 +1,3 @@
 @setlocal
 @set ToolName=%~n0%
-@%PYTHON3% %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
+@%PYTHON_HOME%\python.exe %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*

BaseTools/BinWrappers/WindowsLike/UPT.bat

@@ -1,3 +1,3 @@
 @setlocal
 @set ToolName=%~n0%
-@%PYTHON3% %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
+@%PYTHON_HOME%\python.exe %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*

BaseTools/BinWrappers/WindowsLike/build.bat

@@ -1,3 +1,3 @@
 @setlocal
 @set ToolName=%~n0%
-@%PYTHON3% %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
+@%PYTHON_HOME%\python.exe %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*

BaseTools/Makefile

@@ -15,24 +15,24 @@
 !ERROR "BASE_TOOLS_PATH is not set! Please run toolsetup.bat first!"
 !ENDIF
 
-SUBDIRS = $(BASE_TOOLS_PATH)\Source\C
+SUBDIRS = $(BASE_TOOLS_PATH)\Source\C $(BASE_TOOLS_PATH)\Source\Python
 
-all: c
+all: c python
 
 c :
-  @$(PYTHON3) $(BASE_TOOLS_PATH)\Source\C\Makefiles\NmakeSubdirs.py  all $(BASE_TOOLS_PATH)\Source\C
+  @$(PYTHON_HOME)\python.exe $(BASE_TOOLS_PATH)\Source\C\Makefiles\NmakeSubdirs.py  all $(BASE_TOOLS_PATH)\Source\C
 
 python:
-  @$(PYTHON3) $(BASE_TOOLS_PATH)\Source\C\Makefiles\NmakeSubdirs.py  all $(BASE_TOOLS_PATH)\Source\Python
+  @$(PYTHON_HOME)\python.exe $(BASE_TOOLS_PATH)\Source\C\Makefiles\NmakeSubdirs.py  all $(BASE_TOOLS_PATH)\Source\Python
 
 subdirs: $(SUBDIRS)
-  @$(PYTHON3) $(BASE_TOOLS_PATH)\Source\C\Makefiles\NmakeSubdirs.py  all $**
+  @$(PYTHON_HOME)\python.exe $(BASE_TOOLS_PATH)\Source\C\Makefiles\NmakeSubdirs.py  all $**
 
 .PHONY: clean
 clean:
-  $(PYTHON3) $(BASE_TOOLS_PATH)\Source\C\Makefiles\NmakeSubdirs.py clean $(SUBDIRS)
+  $(PYTHON_HOME)\python.exe $(BASE_TOOLS_PATH)\Source\C\Makefiles\NmakeSubdirs.py clean $(SUBDIRS)
 
 .PHONY: cleanall
 cleanall:
-  $(PYTHON3) $(BASE_TOOLS_PATH)\Source\C\Makefiles\NmakeSubdirs.py  cleanall $(SUBDIRS)
+  $(PYTHON_HOME)\python.exe $(BASE_TOOLS_PATH)\Source\C\Makefiles\NmakeSubdirs.py  cleanall $(SUBDIRS)
 

BaseTools/Scripts/PackageDocumentTools/Readme.md

@@ -1,6 +1,6 @@
 Prerequisite Tools:
-1. Install Python 3.6.6 from https://www.python.org/downloads/release/python-366/
-2. Install wxPython 4.0.3 from https://pypi.org/project/wxPython/#files
+1. Install Python 2.7.3 from https://www.python.org/download/releases/2.7.3/
+2. Install wxPython 2.8.12.1 from https://sourceforge.net/projects/wxpython/files/wxPython/2.8.12.1/
    generally the libraries will be installed at python's subfolder, for example in windows: c:\python27\Lib\site-packages\
 3. Install DoxyGen 1.8.6 from https://sourceforge.net/projects/doxygen/files/rel-1.8.6/
 4. (Windows only) Install Htmlhelp tool from https://msdn.microsoft.com/en-us/library/windows/desktop/ms669985(v=vs.85).aspx

BaseTools/Scripts/PackageDocumentTools/packagedoc_cli.py

@@ -12,11 +12,12 @@
 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #
 
+from __future__ import print_function
 import os, sys, logging, traceback, subprocess
 from optparse import OptionParser
 
-from .plugins.EdkPlugins.edk2.model import baseobject
-from .plugins.EdkPlugins.edk2.model import doxygengen
+import plugins.EdkPlugins.edk2.model.baseobject as baseobject
+import plugins.EdkPlugins.edk2.model.doxygengen as doxygengen
 
 gArchMarcoDict = {'ALL'      : 'MDE_CPU_IA32 MDE_CPU_X64 MDE_CPU_EBC MDE_CPU_IPF _MSC_EXTENSIONS __GNUC__ __INTEL_COMPILER',
                   'IA32_MSFT': 'MDE_CPU_IA32 _MSC_EXTENSIONS',
@@ -37,7 +38,7 @@ def parseCmdArgs():
                       help='Specify the absolute path of doxygen tools installation. For example: C:\\Program Files\\doxygen\bin\doxygen.exe')
     parser.add_option('-o', '--output', action='store', dest='OutputPath',
                       help='Specify the document output path. For example: c:\\docoutput')
-    parser.add_option('-a', '--arch', action='store', dest='Arch', choices=list(gArchMarcoDict.keys()),
+    parser.add_option('-a', '--arch', action='store', dest='Arch', choices=gArchMarcoDict.keys(),
                       help='Specify the architecture used in preprocess package\'s source. For example: -a IA32_MSFT')
     parser.add_option('-m', '--mode', action='store', dest='DocumentMode', choices=['CHM', 'HTML'],
                       help='Specify the document mode from : CHM or HTML')