Applying The CALLIB Patch (for GRPPHA/RBNPHA) To Your 6.4 Installation

First, download the callib patch installer.

Next:
- If you are patching an existing HEASoft 6.4 source code distribution, download the source code patch.
- Alternatively, if you are patching an existing HEASoft 6.4 pre-compiled binary distribution, download the tar file below appropriate for your architecture & operating system:
  
  Linux PC
  
  Linux PC 64-bit
  
  Darwin 7.x Mac PPC
  
  Darwin 8.x Mac PPC
  
  Darwin 9.x Mac PPC (currently unavailable)
  
  Darwin 8.x Mac Intel (currently unavailable)
  
  Solaris/SunOS
  
  Linux Mac PPC
  
  Cygwin PC (currently unavailable)
Finally, copy the patch installer (hdpatch.sh) and the patch file you downloaded above to the directory containing your pre-existing headas-6.4 directory. Then, simply run the installer script (using sh):
```
sh hdpatch.sh
```

If FTOOLS has been useful in your research, please reference this website (http://heasarc.gsfc.nasa.gov/ftools/) and the following:

Blackburn, J. K. 1995, in ASP Conf. Ser., Vol. 77, Astronomical Data Analysis Software and Systems IV, ed. R. A. Shaw, H. E. Payne, and J. J. E. Hayes (San Francisco: ASP), 367.

Web page maintained by: Bryan K. Irby