From the Porting Wrappers'
(http://jazz.external.hp.com/src/index.html#PortingWrappers) Readme file:


                         Porting Wrappers version 6.0.6
                             for MPE/iX Release 6.0



WHAT'S NEW in version 6.0.6 - November 9, 1999
- NEW:
  - fstat() & stat() wrappers added to handle sockets and other non-POSIX
fields
  - hostname command added
  - memalign() wrapper added
  - mprotect() wrapper added
  - tar command wrapper added to work around some tar extract defects
  - uname command added with -i (id) and -l (license) options like HP-UX
  - wait3() & wait4() wrappers added
  - utility functions downshift() & upshift() created
  - STRMCAT message catalog added - contains error messages of all
intrinsics
      in MPE Intrinsics manual which do not use the status variable (where
      HPERRMG intrinsic would be used to retrieve error message)
- UPDATED:
  - clear command updated to clear all the screen buffer, not just what's
      being displayed
  - ld command updated to handle -L and -l options
  - mmap(), etc. updated to handle MAP_ANONYMOUS, MAP_FILE, & MAP_VARIABLE
  - pmpeerror() and strmpeerror() moved from include directory to their own
      directories under posix.1_notavail
  - setsigint() with 3 arguments renamed as setsigint3(); new function
      setsigint() with no arguments is what's most frequently used
  - strmpeerror() updated to retrieve error message from new STRMCAT message
      catalog
  - uname() enhanced with id and license fields like HP-UX
  - single LIBCPXL XL created combining all functions which require Priv
Mode
  - mpeerrno.h & strmpeerror() updated for new MPE 6.0 intrinsics
  - -DDEBUG removed from include/Make.defines as default
  - all header files updated to handle C++