Description

   This routine makes the first contact for all interactive logins
   from other than DECwindows terminals after opening the input and
   output files but before any other dialogue with the user.

   At this point, the site should be preparing to augment or replace
   the OpenVMS system password routine. The callback routine
   LGI$ICB_GET_SYSPWD provides access to the system password
   routine. However, because LGI$ICB_GET_SYSPWD returns only on
   success, the site design should consider what action to take in
   case LGI$ICB_GET_SYSPWD does not return control to LGI$ICR_IACT_
   START.

   The LGI$ICR_IACT_START routine can use the LGI$ICB_GET_INPUT
   callback routine to:

   o  Get input from the user

   o  Use an OpenVMS RMS record access block (RAB) to establish
      appropriate terminal mode settings