Should there be an AST usage section on the AST web page? Somewhere where DS9 is listed (along with Starlink software obviously). I say this because I had not realised that the Ximage tool used AST: http://heasarc.gsfc.nasa.gov/docs/xanadu/ximage/ as I found on google: http://heasarc.gsfc.nasa.gov/docs/xanadu/ximage/ximrel420.html and it might be worth publicising the fact that Starlink are not the only users. PS Does anyone know anything about PDL linux? Bizarrely http://buildlogs.pld-linux.org/index.php?idx=7&ok=1&ns=0&cnt=16&action=qa indicates that there are loads of starlink libraries in it. It seems to be Polish and a quick search on rpm.pbone.net shows you all the starlink RPMs. I haven't found which application they are building that requires these RPMs but it might be worth talking to the maintainer. -- Tim Jenness JAC software http://www.jach.hawaii.edu/~timj