Several curses subroutines are
obsolete beginning in AIX Version 4. These obsolete subroutines are
emulated as indicated in the following list:
The touchoverlap, flushok, and _showstring subroutines are obsolete and there are no direct replacements. The gettmode subroutine is available as a no-op.
Chapter 2, The Curses Library
List of Additional Curses Subroutines