case $1 in
   dbms) more <<END

	The database program dbms

	dbms  is a Bourne shell program written to query the database
	for stars in galactic open clusters (BDA).
	The vocabulary is derived form the interactive command names
	and datatype designation.

	To read an explanation how to use  dbms  enter 'bye' to the
	help prompt and 'xmosaic' to the bda prompt.

	To get one line help on the parameters waited for at any prompt,
	enter 'toggle' at the bda prompt. It will display a help line
	each time you enter a new agent.

END
;;
   bda) more <<END

	The database promt
        
	bda is the database prompt at which you can issue commands.
	The first two letters are generally sufficient for the longer
        agent names. Those with three letters are not shortened.

	Enter 'agent' to the bda prompt to have a list of valid agent
	names, and 'datatype' to have informaton on the concept of
	data type.

END
;;
 agent) more <<END

	The concept of agent in BDA

	When you enter any command at the bda prompt, it becomes the
	current agent and you can enter star numbers or other arguments
	to execute the command. Agents are leaved with 'bye' or simply 'b'.

	A short definition of the agent function may be obtained by
	entering the agent name at the help prompt.

	A short help text presents the various possible parameters that
	can be entered on the agent prompt. It is displayed by entering
	'help' or simply 'b' at the agent prompt.

	A list of menu names can be obtained by entering 'menu' at the
	help prompt.

	List of the agent names:

END
         pr -t -l10 -3 $BDA/descri/dbms_agent.lst | ind
;;
 alias) more <<END

	The agent alias

	aliases are used to move to the directory of the often
	used nearby clusters, they are equivalent to a cd command

	Alias list:

	plei*ades or m45
        hya*des
        coma*ber
        alp*haper
        prae*sepe or m44

END
;;
 sysno) more <<END

	The agent sysno

	sysno displays the reference of the numbering 
	system for the cluster adopted in the database.

        Example:  sysno> tr16

END
;;
measure) echo ' ' 
  echo " Measure in a data type" ; echo '' ;;
list) echo ' '
  echo " List a file" ; echo ' ' ;;
detail) echo ' '
  echo " displays the number of stars in each reference" ; echo ' ' ;;
esac