4.2 The contents of file 
      line starts with ”#” : comment line
      As for the sample file, first two lines are comments. 
     The following number of lines show the number excluding comment lines.
   
	At the 
	first line : you write the number of VCID
	2nd line : you write the number of APID
        3rd line : you write the VICD with comma separated
	4th line : you write the name of AP with comma separated
	5th line : you write the APID with comma separated
	6th line : if necessary, you write the mask number of VCID and APID (multiple number) with comma separated
	
      please don’t put any unnecessary blanks or words in the line.

4. SOCKFILE file
	you put the SOCKFILE in the SOCKFILE directory.

  4.1 items of file
	You need to specify in the order :
	identification of access point, port number, identifier of sender, host name of access point

     identification of access point (fixed)：
      	dst：data distribution device
      	stg：data strage device
      	sir：SIRIUS（CPU）server

      Port number (fixed):
      	10000：data distribution device
	20000：data storage device
	30200：SIRIUS（CPU）server

      identifier of sender (please check the number that you use)：
      	Identification number of SDTP interface of system device that you use
	
      identifier of sender (please check the number that you use)：
	Identification number of SDTP interface of the origin of the data

      host name of access point (please check the number that you use)：
	host name of access point of IP address.

  ※ Please check details about SOCKFILE in the document ‘tutorial of the function of SDTP library”
     As for the specific value that you need to specify, please ask to the person in charge.

5. How to use
  In this section, how to use “csd_dlpdu” will be explained simply. Details can be found in the user manual.

  5.1 executable form
      csd_dlpdu [required parameters] [optional parameters] full path of definition file of environment (or the list of definition files of environment) specification of output device

  5.2 required parameter
      -m [1 or 2]: specify the mode 1=real, 2=rate buffer
      -t YYYYMMDDhhmmss YYYYMMDDhhmmss: acquired target start time acquired target end time :  valid when you specify “-m 2"
      -p YYMMDDxxxx: specify the number of path 
      -n XXXXX: specify the antenna ex) 130, KSC20
      -M xx: specify the number of spacecraft  two digit number in decimal number
      -T [1 or 2]: specify the type of time 1=time of receive, 2=time of make
      
  5.3 optional parameter
      -h : show help
      -s n: specify the maximum packet in one file 
      -c XXXX: specify the VCID
      -C: specify all of the VCID
      -a XXXX: specify the APID
      -A: specify all of the APID
      -H [info or add]: specify the header attachment  info=information(info) field and data with additional information, add= data with additional information 			if you do not specify =data (telemetry data only)