Unit Help;   //this is where the Id's are set with their description
 Interface
 Const

Address_File = 35;  //delphi identifies Address_File as a shortint
etc..

GetHelp(Address_File); //call get help pass my ID to open to the Address_File topic

procedure GetHelp(HelpID : Word);
begin
  Application.HelpFile := ProgramPath + 'help.chm';
  HtmlHelpW(0, PWideChar(Application.HelpFile),HH_HELP_CONTEXT , HelpID);
end;

function HtmlHelpW(hwndCaller : HWND; pszFile: PWideChar; uCommand : Integer;
         dwData : DWORD) : HWND; stdcall; external 'hhctrl.ocx' name 'HtmlHelpW';

chmls, a CHM utility. (c) 2010 Free Pascal core.

Usage: chmls [switches] [command] [command specific parameters]

Switches :
 -h, --help     : this screen
 -p, --no-page  : do not page list output
 -n,--name-only : only show "name" column in list output

Where command is one of the following or if omitted, equal to LIST.
 list       <filename> [section number]
            Shows contents of the archive's directory
 extract    <chm filename> <filename to extract> [saveasname]
            Extracts file "filename to get" from archive "filename",
            and, if specified, saves it to [saveasname]
 extractall <chm filename> [directory]
            Extracts all files from archive "filename" to directory
            "directory"
 unblockchm <filespec1> [filespec2] ..
            Mass unblocks (XPsp2+) the relevant CHMs. Multiple files
            and wildcards allowed
 extractalias <chmfilename> [basefilename] [symbolprefix]
            Extracts context info from file "chmfilename"
            to a "basefilename".h and "basefilename".ali,
            using symbols "symbolprefix"contextnr
 extracttoc <chmfilename> [filename]
            Extracts the toc (mainly to check binary TOC)
 extractindex <chmfilename> [filename]
            Extracts the index (mainly to check binary index)