You can use the ECHO option to allow an application to control the visibility of the input area. When ECHO is specified, OMVS hides or displays the input area based on the application's setting of the ECHO bit in the termios structure. If the bit is off, the command line is hidden, except in subcommand mode. If the bit is on, the command line is visible. The default is NOECHO, which does not allow the application to control the visibility of the input area.