change  a setting for a field or fields, enter a CHSET 
    command  with  a filespec and the fields you want to change.  For 
    example, if you type

    B>chset calc.cmd [8087=opt,shared=on,suspend=on]

    CHSET  modifies  the command header of a program contained in the 
    file CALC.CMD.  

    Displaying Field Settings

    When  you  enter  a  CHSET  command  with a filespec and no field 
    settings,  CHSET  displays the settings for the specified file or 
    files.  For example, a  physical  carriage  return  without  sending
            command to CCP/M.

  CTRL-I   same as the TAB key.

  CTRL-H    delete character to the left of cursor.

  CTRL-J    Line feed.  Same effect as RETURN.

  CTRL-O    Suppresses console output.  Program continues running in
            the  background.   Press  RETURN to return to the system 
            prompt.     

  CTRL-M    same as RETURN.

  CTRL-P    echoes console output to the list device.

  CTRL-Q    restarts screen scroor n.
  s    substitute a string (group) of characters for s.
  o    substitute an option or option list for o.
  []   type square brackets to enclose an option list.
  ()   type parens to enclose a range of options within an option list.
  RW   Read-Write attribute - opposite of RO
  RO   Read-Only attribute - opposite of RW
  SYS  System attribute - opposite of DIR
  DIR  Directory attribute - opposite of SYS
   ... preceding element can be repeated as many times as desired.
  *    wildcard: reps  not support passwords.  To exit DDT86,
    press CTRL-C.

    ///2EXAMPLES
    Examples:

    A>DDT86
    A>DDT86 PROGRAM1
    A>DDT86 PROGRAM2.CMD
    A>DDT86 B:PROGRAM3.CMD

    DDT86 Command Examples:

    -D
    -L1008:0,4F
    -SW23a
    -DW50:0
    -F100,200,FF
    -A10C
    -Rprog.h86

    ///2COMMANDS
    DDT86 Command Summary:

    The command character can be followed by one or  more  arguments.
    Separate  arguments  from  one  another  by  commas or spaces; no
    )       Examine and Modify CPU Registers


    DDT-86 Command Parameters
    -------------------------
    Parameter   Replace With

    bc          byte constant
    b1          breakpoint one
    b2          breakpoint two
    d           destination for data
    f           final address
    n           number of instructions
                to execute
    r           register or flag name
    s           starting address
    W           word 16-bit
    wc          word constant

    /lling after a CTRL-S.

  CTRL-R    retypes the characters to the left of the cursor  on  a
            new line.

  CTRL-S    stops screen scrolling.

  CTRL-U    cancels current command line.

  CTRL-X    deletes all characters to the left of the cursor.

  CTRL-Z    string separator for PIP and ED; terminates console input
            when console is used as a source device with PIP.

    ///1COMMANDS

    Concurrent CP/M command line syntax:

    A> <command> {command tail} <RETURN>

laces all or part of a filename and/or filetype.
  ?    wildcard: replaces any single character
       in the same position of a filename and/or filetype.

    ///1DATE
    Syntax:

    DATE
    DATE CONTINUOUS
    DATE date/time-specification
    DATE SET

    Explanation:

    The DATE  utility  allows  you  to set  the system  clock  to the
    correct date and time. It also allows you to display the date and
    time on the current virtual console.

    The date is  represented in  conspaces are allowed between the command character  and  the  first
    argument.

    As             (Assemble)      Enter Assembly Language Statements
    Bs,f,s1        (Block Compare) Compare Blocks of Memory
    D{W}{s{,f}}    (Display)       Display Memory in Hexadecimal and ASCII
    Efilespec      (Execution)     Load Program for Execution
    Fs,f,bc        (Fill)          Fill Memory Block with a byte constant
    FWs,f,wc       (Fill Word)     Fill Memory Block with a word constant
    G{s//1DIR
    Syntax:

    DIR
    DIR d:
    DIR [Gn]
    DIR [S]
    DIR filespec
    DIR filespec [Gn]
    DIR filespec [S]

    Explanation:

    Displays the names of non-system (DIR) files in the directory  of
    an  on-line  diskette.     Use DIR [S] to  display  the  names of
    SYStem files (files that have the SYS attribute set). Use DIR [Gn]
    to display non-system files in User n.    

    ///2EXAMPLES
    Examples:

    A>DIR
    A>DIR B:
    A>DIR C:MYFILE.DAT
    A>DI    Concurrent CP/M  accepts the command lines you type following the
    system prompt.  The command keyword identifies the system command 
    or program to be executed.  The optional command tail can consist  
    of  a  filespec or various command parameters, depending upon the 
    specific command.  To  complete  the command, press the RETURN or 
    ENTER key.  File  specifications in command lines are composed of 
    the following parts:

    {d:}filename{.typ}{;password}

    d:         ventional  month-day-year  format
    MM/DD/YY  while the  time is represented in 24-hour clock format:
    00:00:00  to  11:59:59  indicates  AM,  and  12:00:00 to 23:59:59
    indicates PM.

    ///2EXAMPLES
    Examples:
  
    A>DATE

    Displays the current date and time.

    A>DATE C

    Displays the date and time continuously.

    A>DATE 11/28/83 10:35:45

    Sets the date and time as specified.

    A>DATE SET

    Prompts you for date and time entries.

    ///1DDT86
 }{,b1{,b2}} (Go)            Begin Execution with optional breakpoints
    Hwc1,wc2       (Hex)           Hexadecimal Sum and Difference
    Icommand tail  (Input)         Set Up Input Command Line
    L{s{,f}}       (List)          List Memory in Mnemonic Form
    Ms,f,d         (Move)          Move Memory Block
    QI{W}n                         Read From I/O Port
    QO{W}n,v                       Write To I/O Port
    Rfilespec      (Read)          Read Disk File into Memory
    S{W}s          (SR *.CMD
    A>DIR A*.A86
    A>DIR PROG???.H86
    A>DIR PROGRAM.*
    A>DIR [S]
    A>DIR B:UTILITY.CMD [S] 

    ///1DYNAMIC
    You can switch the current (foreground) virtual console into  the
    background  by selecting a different virtual console for display.
    If the switched-out virtual console is in  dynamic mode, you will
    not  see  any  program  output that may  have  scrolled  off that
    console while you were switched away.

    If the console is  in  buffered mode, this       is an optional drive specifier
    filename        is the 1- to 8-character file name
    .typ            is an optional file type
    ;password       is an optional 1- to 8-character password

  ///1conventions

               COMMAND CONVENTIONS

  The following special symbols define command syntax.

  {}   surrounds an optional item.
  |    separates alternative items in a command line.
  <cr> indicates a carriage return.
  ^    indicates the Control Key.
  n    substitute a number f   Syntax:

    DDT86 {filespec}

    Explanation:

    DDT86  aids debugging of 8086 and 8088 programs.  DDT86 assumes a
    default  filetype  of  CMD.   If  a  file  specification  is  not
    included,  DDT86  is  loaded  into  User  Memory  without  a test
    program. The test program is then loaded using the E command.  If
    the  optional file specification is included in the command, both
    DDT86 and the test program file specified by filespec are  loaded
    into  memory. DDT86  doeet)           Set Memory Values
    SRs,f,<string>                 Search For String
    T{n}           (Trace)         Trace Program Execution
    TS{n}          (Trace)         Trace and Show All Registers
    U{n}           (Untrace)       Monitor execution without Trace
    US{n}          (Untrace)       Monitor and Show all Registers
    V              (Verify)        Show Memory Layout after Disk Read
    Wfilespec      (Write)         Write Content of Block to Disk
    X{r}           (Examineing  the 
    destination drive or destination filespec.

    Section 10  of the  Concurrent  CP/M  User's  Reference  Guide is 
    devoted to ED.

    ///2COMMANDS
    ED Command Summary:

    Note: CP points to the current character in the edit buffer.

    nA            append n lines from original file to memory buffer.
    0A            append file until buffer is one-half full
    #A            append file until buffer is full (or end of file)
    B, -B         move CP to the beginning                command applied to the same file
    0X            delete file X$$$$$$$.LIB
    0Xfilespec^Z  delete filespec
    nZ            wait n seconds

    ///2EXAMPLES
    Examples:

    A>ED TEST.DAT
    A>ED TEST.DAT B:
    A>ED TEST.DAT TEST2.DAT
    A>ED TEST.DAT B:TEST2.DAT

    Command Examples:

    :#a
    :p
    :4c0tt
    :e
    :5K
    :B5T
    :Rmyfile.txt

    ///1ERA
    Syntax:

    ERA filespec

    Explanation:

    ERA erases a file or group of files. 

    filename   represents the required filename, which can be 1 to  8
               alphabetic or numeric characters.

    .typ       represents the optional filetype,  which can be 1 to 3
               alphabetic or numeric characters preceded by a period.

    ;password  represents the optional password,  which can be 1 to 8
               alphabetic  or  numeric  characters,   preceded  by  a 
               semicolon.

    Valid combinations of the elements of a  file  specification  are
d

    All values represented by n are hexadecimal paragraph addresses.


    ///1HELP

  Syntax:

     HELP {topic} {subtopic1 ... subtopic8} {[NOPAGE|LIST]}

  Explanation:

  HELP  displays  a  list  of  topics   and   provides   summarized
  information for CCP/M commands.

  HELP topic displays information about that topic.
  HELP topic subtopic displays infor