C:\WINDOWS>HELP ERASE
Deletes one or more files.

DEL [/P] [/F] [/S] [/Q] [/A[[:]attributes]] names
ERASE [/P] [/F] [/S] [/Q] [/A[[:]attributes]] names

 names         Specifies a list of one or more files or directories.
               Wildcards may be used to delete multiple files. If a
               directory is specified, all files within the directory
               will be deleted.

 /P            Prompts for confirmation before deleting each file.
 /F            Force deleting of read-only files.
 /S            Delete specified files from all subdirectories.
 /Q            Quiet mode, do not ask if ok to delete on global wildcard
 /A            Selects files to delete based on attributes
 attributes    R  Read-only files            S  System files
               H  Hidden files               A  Files ready for archiving
               -  Prefix meaning not

If Command Extensions are enabled DEL and ERASE change as follows:

The display semantics of the /S switch are reversed in that it shows
you only the files that are deleted, not the ones it could not find.



C:\WINDOWS>HELP EXIT
Quits the CMD.EXE program (command interpreter) or the current batch
script.

EXIT [/B] [exitCode]

 /B          specifies to exit the current batch script instead of
             CMD.EXE.  If executed from outside a batch script, it
             will quit CMD.EXE

 exitCode    specifies a numeric number.  if /B is specified, sets
             ERRORLEVEL that number.  If quitting CMD.EXE, sets the process
             exit code with that number.



C:\WINDOWS>HELP FC
Compares two files or sets of files and displays the differences between
them


FC [/A] [/C] [/L] [/LBn] [/N] [/OFF[LINE]] [/T] [/U] [/W] [/nnnn]
  [drive1:][path1]filename1 [drive2:][path2]filename2
FC /B [drive1:][path1]filename1 [drive2:][path2]filename2

 /A         Displays only first and last lines for each set of differences.
 /B         Performs a binary comparison.
 /C         Disregards the case of letters.
 /L         Compares files as ASCII text.
 /LBn       Sets the maximum consecutive mismatches to the specified
            number of lines.
 /N         Displays the line numbers on an ASCII comparison.
 /OFF[LINE] Do not skip files with offline attribute set.
 /T         Does not expand tabs to spaces.
 /U         Compare files as UNICODE text files.
 /W         Compresses white space (tabs and spaces) for comparison.
 /nnnn      Specifies the number of consecutive lines that must match
            after a mismatch.
 [drive1:][path1]filename1
            Specifies the first file or set of files to compare.
 [drive2:][path2]filename2
            Specifies the second file or set of files to compare.