C:\WINDOWS>HELP SORT
SORT [/R] [/+n] [/M kilobytes] [/L locale] [/REC recordbytes]
 [[drive1:][path1]filename1] [/T [drive2:][path2]]
 [/O [drive3:][path3]filename3]
 /+n                         Specifies the character number, n, to
                             begin each comparison.  /+3 indicates that
                             each comparison should begin at the 3rd
                             character in each line.  Lines with fewer
                             than n characters collate before other lines.
                             By default comparisons start at the first
                             character in each line.
 /L[OCALE] locale            Overrides the system default locale with
                             the specified one.  The ""C"" locale yields
                             the fastest collating sequence and is
                             currently the only alternative.  The sort
                             is always case insensitive.
 /M[EMORY] kilobytes         Specifies amount of main memory to use for
                             the sort, in kilobytes.  The memory size is
                             always constrained to be a minimum of 160
                             kilobytes.  If the memory size is specified
                             the exact amount will be used for the sort,
                             regardless of how much main memory is
                             available.

                             The best performance is usually achieved by
                             not specifying a memory size.  By default the
                             sort will be done with one pass (no temporary
                             file) if it fits in the default maximum
                             memory size, otherwise the sort will be done
                             in two passes (with the partially sorted data
                             being stored in a temporary file) such that
                             the amounts of memory used for both the sort
                             and merge passes are equal.  The default
                             maximum memory size is 90% of available main
                             memory if both the input and output are
                             files, and 45% of main memory otherwise.
 /REC[ORD_MAXIMUM] characters Specifies the maximum number of characters
                             in a record (default 4096, maximum 65535).
 /R[EVERSE]                  Reverses the sort order; that is,
                             sorts Z to A, then 9 to 0.
 [drive1:][path1]filename1   Specifies the file to be sorted.  If not
                             specified, the standard input is sorted.
                             Specifying the input file is faster than
                             redirecting the same file as standard input.
 /T[EMPORARY]
   [drive2:][path2]          Specifies the path of the directory to hold
                             the sort's working storage, in case the data
                             does not fit in main memory.  The default is
                             to use the system temporary directory.
 /O[UTPUT]
   [drive3:][path3]filename3 Specifies the file where the sorted input is
                             to be stored.  If not specified, the data is
                             written to the standard output.   Specifying
                             the output file is faster than redirecting
                             standard output to the same file.




C:\WINDOWS>HELP START
Starts a separate window to run a specified program or command.

START ["title"] [/Dpath] [/I] [/MIN] [/MAX] [/SEPARATE | /SHARED]
     [/LOW | /NORMAL | /HIGH | /REALTIME | /ABOVENORMAL | /BELOWNORMAL]
     [/WAIT] [/B] [command/program]
     [parameters]

   "title"     Title to display in  window title bar.
   path        Starting directory
   B           Start application without creating a new window. The
               application has ^C handling ignored. Unless the application
               enables ^C processing, ^Break is the only way to interrupt
               the application
   I           The new environment will be the original environment passed
               to the cmd.exe and not the current environment.
   MIN         Start window minimized
   MAX         Start window maximized
   SEPARATE    Start 16-bit Windows program in separate memory space
   SHARED      Start 16-bit Windows program in shared memory space
   LOW         Start application in the IDLE priority class
   NORMAL      Start application in the NORMAL priority class
   HIGH        Start application in the HIGH priority class
   REALTIME    Start application in the REALTIME priority class
   ABOVENORMAL Start application in the ABOVENORMAL priority class
   BELOWNORMAL Start application in the BELOWNORMAL priority class
   WAIT        Start application and wait for it to terminate
   command/program
               If it is an internal cmd command or a batch file then
               the command processor is run with the /K switch to cmd.exe.
               This means that the window will remain after the command
               has been run.

               If it is not an internal cmd command or batch file then
               it is a program and will run as either a windowed application
               or a console application.

   parameters  These are the parameters passed to the command/program


If Command Extensions are enabled, external command invocation
through the command line or the START command changes as follows:

non-executable files may be invoked through their file association just
   by typing the name of the file as a command.  (e.g.  WORD.DOC would
   launch the application associated with the .DOC file extension).
   See the ASSOC and FTYPE commands for how to create these
   associations from within a command script.

When executing an application that is a 32-bit GUI application, CMD.EXE
   does not wait for the application to terminate before returning to
   the command prompt.  This new behavior does NOT occur if executing
   within a command script.

When executing a command line whose first token is the string "CMD "
   without an extension or path qualifier, then "CMD" is replaced with
   the value of the COMSPEC variable.  This prevents picking up CMD.EXE
   from the current directory.

When executing a command line whose first token does NOT contain an
   extension, then CMD.EXE uses the value of the PATHEXT
   environment variable to determine which extensions to look for
   and in what order.  The default value for the PATHEXT variable
   is:

       .COM;.EXE;.BAT;.CMD

   Notice the syntax is the same as the PATH variable, with
   semicolons separating the different elements.

When searching for an executable, if there is no match on any extension,
then looks to see if the name matches a directory name.  If it does, the
START command launches the Explorer on that path.  If done from the
command line, it is the equivalent to doing a CD /D to that path.



C:\WINDOWS>HELP SUBST
Associates a path with a drive letter.

SUBST [drive1: [drive2:]path]
SUBST drive1: /D

 drive1:        Specifies a virtual drive to which you want to assign a path.
 [drive2:]path  Specifies a physical drive and path you want to assign to
                a virtual drive.
 /D             Deletes a substituted (virtual) drive.

Type SUBST with no parameters to display a list of current virtual drives.