Allows you to switch control of your terminal to another process.

                                  NOTE

      This function is not available in DECwindows; any attempt to
      invoke it incurs an error.

   Format

     ATTACH   [subprocess-name]

Additional information available:

Parameter

subprocess-name
   Specifies the name of the process to which you want to connect. If
   you do not specify a process name, LSE connects you to the parent
   process.