This page is edited from the 1cmdfaq.txt faq-file contained in
my tscmd.zip
command line interface (CLI) collection. That zipped file has much
additional material, including a number of detached .cmd script
files. It is recommended that you also get the zipped version as a
companion.
Please see "
The Description and
the Index page" for the conditions of usage and other such
information.
 
91} How do I get command-line reference help?
Besides the obvious
  HELP
or for individual commands e.g.
  HELP /?

one can invoke the desktop version of the Command-line reference
  hh %SYSTEMROOT%\Help\ntcmds.chm
For a single command one can use e.g. the following alternatives
  FOR /?
  HELP FINDSTR | MORE
  hh ntcmds.chm::/set.htm [You can't use this unless you have the ntcmds.chm file]
For putting all the help into continuous text file use
   @echo off & setlocal enableextensions
   if exist help.txt del /p help.txt
   for /f %%f in ('help') do (
       >>help.txt help %%f
       >>help.txt echo ----------------------------------------------------------
       >>help.txt echo.
       )
   endlocal & goto :EOF
If you need install Microsoft Windows Script 5.6 for Windows 2000
and XP including Visual Basic Script Edition (VBScript.) you can
look "Script56.CHM" up at Google or [outdated] start from
  
http://www.microsoft.com/downloads/
and then take up the search for "Microsoft Windows Script 5.6". When
you have it installed, the compiled HTML Help file can be called
e.g. with something like
  hh "C:\Program Files\Microsoft Windows Script\ScriptDocs\Script56.CHM"
A tip from Walter Briscoe:
  hh -decompile . %SYSTEMROOT%\Help\ntcmds.chm 
writes 
a huge amount of .htm files in
the current directory.