Louis Farrugia.

Ton Spek.

Ton Spek, Davide Viterbo, Alessandro Gualtieri.

Ralf Grosse-Kunstleve setting up his talk on 'modern approaches to programming'.

George Sheldrick presenting on 'Simple algorithms for Macromolecular Phasing'.

David Watkin presenting on 'maintenance and development of legacy code'.

Svetlana Ivashevskaya.

Ilia Guzei.

Huub Kooijman.

Xinyi Xian.

Marcin Wojdyr.

Linda ten Eyck and Lynn ten Eyck: evening meal at the Certosa di Pontignano venue.

Kevin Cowtan.

Louis Farrugia, Richard Stephenson, Jeremy Cockcroft: evening meal at the Certosa di Pontignano venue.

Gert Kruger, Simon Parsons, Simon Billinge, Bill David, Louis Farrugia: evening meal at the Certosa di Pontignano venue.

Brian Toby presenting on 'programming for CIF'.

Zhen Jie Feng, Huub Kooijman, Xinyi Xian: midday meal at the Certosa di Pontignano venue.

Peter Turner.

Pavol Skubak, Juan Rodriguez-Carvajal, Laura Torre Fernández: midday meal at the Certosa di Pontignano venue.

James Pflugrath, Yvonne Mascarenhas, Michel Fodje: coffee break discussions.

Peter Turner and Louis Farrugia: coffee break discussions.

David Watkin and Ralf Grosse-Kunstleve: coffee break discussions.

Marcello Mellini, Bill David and Jon Wright: coffee break discussions.

Lachlan Cranswick, Simon Billinge and Marcello Mellini: coffee break discussions.

Margareta Sorenson.

Kevin Cowtan and Paul Emsley: coffee break discussions.

Simon Billinge presenting on 'pair distribution functions (PDF)'.

Xinyi Xian and Svetlana Ivashevskaya: school dinner in the centre of Siena.

Jeppe Christensen.

Michel Fodje, Kevin Cowtan, Paul Emsley: school dinner in the centre of Siena.

Juan Rodriguez-Carvajal, Yvonne Mascarenhas, Harry Powell: school dinner in the centre of Siena.

Front row: Simon Billinge and Jon Wright.

Tom Terwilliger presenting on 'new algorithms'.

Simon Parsons and George Sheldrick: coffee break discussions.

Martin Lutz, Ton Spek, George Sheldrick.

Louis Farrugia.

Gert Kruger, Jeremy Cockcroft and David Watkin: coffee break discussions.

Svetlana Ivashevskaya, Xinyi Xian: coffee break discussions.

Tom Terwilliger, Jeppe Christensen, Dale Tronrud: coffee break discussions.

Jon Wright.

Alessandro Gualtieri, Bill David, Simon Billinge: coffee break discussions.

Priyamvada Acharya.

Martin Lutz, David Watkin, Louis Farrugia: coffee break discussions.

Steven Ness.

Irakli Sikharulidze.

Michel Fodje.

George Sheldrick.

Gudrun Stranzl.

Ralf Grosse-Kunstleve: coffee break discussions.

Dale Tronrud.

Paul Emsley: coffee break discussions.

Lynn ten Eyck presenting on 'Fourier methods'.

Dale Tronrud presenting on 'refinement II - modern developments'.

Juan Rodriguez-Carvajal presenting on 'Rietveld refinement'.

Commission members and Chester Editorial staff at the Manchester Meeting of the Commission on Journals, August 1999. Front row, left to right: A. M. Glazer, J. P. Glusker, S. R. Hall, J. R. Helliwell, F. H. Allen, A. Authier. 2nd row: J. Vicat, A. L. Spek, G. Ferguson, A. Linden, A. J. Blake, W. Clegg, Peter Strickland, C. P. Brock. 3rd row: Andrea Sharpe, Louise Clark-Jones, Sue King, G. R. Desiraju, M. M. Harding. 4th row: Nicola Ashcroft, Katie Moore, C. Lecomte, M. Vijayan, A. Kalman, M. Moore, M. J. Adams, G. B. Jameson, Jill Bradshaw. 5th row: Gillian Holmes, F. R. Fronczek, D. Schwarzenbach, A. Oskarsson, Y. Ohashi, D. Pandey, I. D. Brown, Amanda Berry. 6th row: H. M. Einspahr, W. C. Stallings, M. R. Taylor, Mike Hoyland, Sean Conway, Brian McMahon, G. Kostorz, C. J. Howard.

Programme Committee meeting before the Congress in Trapani, Sicily, 16-20 June 2004. Left to right: A. Benedetti, K. Byrappa, ?, F. J. Lahoz, J. L. Martin, C. Lecomte, A. Zagari, A. L. Spek, C. Mealli, M. Kaftory, Y. Fujii, P. Spadon, ?.

Michelangelo Hall, Fortezza da Basso, Florence.

Audience.

G. Bingen.

S. Siliani, P. Spadon, G. Bingen.