                          KEY FILE LIST
  Type in the names of any key files you want DOC to use. Key files are
  files containing lists of function and procedure names, one name per
  line.  DOC comes with a CLIPPER5.KEY file which lists all Clipper Library
  functions as well as Key Files for a few popular 3rd party libraries. You
  will have to create key files for your personal library and any other 3rd
  party libraries you use. When DOC is creating the "Functions Called"
  section of a function header it looks through the key files to try to
  find the names of any unknown functions.  If a called function is found
  in one of the key files DOC looks to see if a Doc Name has been specified
  for that key file.  If it has DOC lists that called function as being
  "from" that Doc Name.  If the Doc Name has been left blank for that key
  file that function is not listed as a Function Called. Only unknown
  functions which are not found in any key file are listed as being "from
  ???".

  Since programmers often want to standardize the capitalization
  the capitalization of library function calls in their source code DOC
  allows you to specify for each key file whether DOC should change the
  capitalization of each occurrence in the source code of any functions
  from that key file.  You can tell DOC to change the capitalization to all
  upper case, all lower case, first letter upper and rest lower or to the
  way the function name is capitalized in the key file.

  If you leave the Doc Name column blank the functions listed in that key
  file will be ignored by DOC.  If you type in a Doc Name the functions in
  that key file will included in the file headers and reports and will be
  listed as being "from" that Doc Name. If you type a "L", "U", "F" or "K"
  in the Cap column then any words in your source code which match a word
  in that Key File will be capitalized (or uncapitalized) as specified :
                L - all lower case
                U - all upper case
                F - first letter capitalized, rest lower case
                K - capitalized the same as function name in the key file.

  Press ENTER to be editing on the current line.  Press the down arrow key
  to add a new line.  Press the ESC key when done.

                  Change Case of Language Constructs (ULF)
  Have DOC set language construct words such as IF, ELSE, ENDIF, PROCEDURE,
  DO CASE, etc. in the  output source code and action diagrams to all upper
  case (U) or all lower lower case (L), first letter upcase and rest lower
  case (F).  If this is left blank then DOC does not change the case of
  language construct words.
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