----------  System  ----------

There are two ways to call the UNIX shell to execute a command.  They are:

Syntax:

     1) do 'UNIX_COMMAND';

UNIX_COMMAND is the command to be executed.  It must be enclosed in quotes and
may span several lines.

Syntax:

     2) !UNIX_COMMAND

UNIX_COMMAND is the command to be executed.  It consists  of  every  character
after the '!' to the end of the line.

In  any  Empress  command  using  " from FILE", the input for the command
is  taken  from  the  named  FILE.  FILE  may  be replaced by "!UNIX_COMMAND",
in  which  case  the  output  from  the  UNIX_COMMAND is used as the input for
the  Empress  command.   The   only  exception  to  this  is  the  SET command
which requires a file name with the "from FILE" option.

Where  the  clause  "into  FILE"  can  be  used,  FILE  may  be  replaced   by
"!UNIX_COMMAND".
