= File edit

        {EDIt | ET | EB | EH | EN | EC(=EL) | ECN(=Ei) | EK | EKN(=EJ)}
            file-name [/P[0|1]] [CAP|NOCAP] [TC|NOTC] [NB] [NONUM] [Fn[-m]]
            [/L] [/Ln] [[/O][n[t]]-[m[t]]]
            [/M[r][w][b|c|h|k][n][o|L][X][width[S]][d]]

            -Select command verb for the file to be opened.
             (Text or Binary mode is self determined if not specified.)
             ET :force textmode.
             EB :binary mode. 0x0d0a nor 0x0a is not line delimitter.
                 line is split by length of width.
             EH :display file with dump mode(CHAR and HEX digit).
                 Both Char and HEX digit input is allowed.
             EN :SPF file(Col.73-80 is line-number,line length is fixed
                 to 80 byte.last 2 digit(col.79-80) is line update counter
                 automaticaly maintained.
             EC :80 byte COBOL file with col.1-6 is line-number.
                 EL is alias.
             EK :80 byte COBOL file with col.1-6 is space.
             ECN:EC and EN.SPF-COBOL with col.1-6 is line-number.
                 Ei is alias.
             EKN:EK and EN.SPF-COBOL with col.1-6 is space.
                 EJ is alias.
            -P  :P or P1 protect out of margin.
                 P0 means on binary file line expansion is avail only by
                 keyin on the out of margin.
            CAP :All input to the file is translated to upper-case.
                 See also CAP command.
            NOCAP:Upper-case translation is not done.
                  Use to deny default setting by CAP command.
            TC   :TabClear. Tab is replaced by some count of space at save.
                  Count is as you see and controled by TAB command.
            NOTC :Use to deny the default TC option for the file opened by
                  en command.
            NB   :skip temporary backup at file save.
                  To protect from file corruption by ABEND at file write,
                  original file(local file except on floppy drive only) is copied
                  on the directory just before writeback,then deleted after
                  write completed. Specify NB if you worry about disk space
                  or performance.
                  "-BK" option of END/SAVe command denies this option.
            NONUM:Col 73-80 of TSO file with RECFM=Fx,LRECL=80 is treated
                  as line number. Use this option to deny it.
            Fn[-m]:set max line length to n and left margin to m.
                   Column over n is protected to input.
                   Use n=0 to deny the protection for TSO file with RECFM=Fx.
            -L  :when open using wild card,list not file but dir list
                 even if corresponding member is only one.
            -Ln :initialy jump to n-th line after opened the file.
            -n[t]-m[t]:load start/end line no or file offset.
             t:tail option.
             ex. 100-900 , -600 , 600- , 600 , /o1200-13ff, 100t-100t,
                 /o400t.  600 is same as -600.
             Only one part of a file is loaded at a time.
            -/M:Read,Write mode; specify P,U,T or B for r/w.
             If r=B,do not specify w.
              P:PC mode    :0x0d0a is line delimitter.
              U:UNIX mode  :0x0a   is line delimitter.
              T:TEXT mode  :0x0d0a and 0x0a is both line delimitter.
              M:TEXT mode  :0x0d   is line delimitter.

              B:same as EB cmd
              H:same as EH cmd
              C:same as EC cmd
              K:same as EK cmd
              N:same as EN cmd

              Default is "t" for input,"u" for output if all input
              line eol is 0x0a, "p" if 0d0a.
              Default is /muu for /mu,/mtp for /mt when only "r" is
              specified.
              If r!=w, EOL char is changed and written when save or close
              file even if no line updated.
              "width" is initial display width.if line is long over the
              value it is displayed as concatinated line.
              (To split concatinated line,use "SPL CONT" command)
              Value is save for binary/text edit/text browse mode each
              if 's' option is followed,and effective until next 's'
              specification. 0 means 9,999(default,999 for DOS version).
              If no default is set, 9,999(Text file) or 72(binary file)
              is selected.
              'd' option is to display file description.
                -->(1).Function-Key default assignment. #14

              o|L:Type of line number column,display by offset or line
                  number.Default to binary file is set by NUM command,
                  hex when no default is set.
                  but input range type specification override it.
              X:virtical HEX display(3 line of char,hex 1st digit and
                hex 2nd digit on the same column)

              /l (lowercase L)option is also used to specify dir-list
              is displayed even when only one file is correspond to the
              wildcard specification.In that case symply specify "/l"
              without lineno specification.

            -Directory list is displayed by specifying directory name
             or wild-card filespec,and "."(current) or ".."(parent) is
             allowed.
             If only one file is corresponding to the wild-card,
             the file is displayed except the case /l option specified.
             Wildcard  "*" is usualy used for current displayed file,
             use "**" or "*.*" for all files in current directory.
            -System or Hidden cannot be updated by OS/2 version.