Note that unless otherwise specified, these files are all for the IRIX 
operating system, even if they don't have IRIX in their filenames. The 
lone exception as of this writing is the PTC_PROE_WF2_KEYGEN.EXE file, 
which needs to be run under WinNT. At a future date, if files for other 
operating systems are included here, their filenames will have nomenclature 
indicating such, for example AIX for IBM binaries, SPARC for Solaris, and 
similar. Thank you, The Management.