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{\bf MINUTES OF A MEETING OF WORKING GROUP 2 OF CCP4} \\
{\bf WHICH WAS HELD AT YORK UNIVERSITY}               \\
{\bf  on the 10th of April 1991}
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\begin{tabular}{ll}
Present:                        &                       \\
                                &                       \\
Phil Evans (acting Chairman)    & MRC, Cambridge        \\
Eleanor Dodson                  & York University       \\
Jan Zelinka                     & York University       \\
John Campbell                   & Daresbury Laboratory  \\
Geoff Forward                   & Sheffield University  \\
Sheila Gover                    & Oxford University     \\
Kim Henrick                     & MRC, Cambridge        \\
Don Akrigg                      & Leeds University      \\
Peter Daly                      & Daresbury Laboratory  \\
Jim Raftery                     & Manchester University \\
Cameron Dunn                    & Edinburgh University  \\
Ian Tickle                      & Birkbeck College      \\
Francesca Young                 & University of Glasgow \\
Wojciech Wolf (Secretary)       & Daresbury Laboratory
\end{tabular}

Apologies from David Rice, Paul Taylor

1. {\it Minutes of the previous meeting}

The minutes of the meeting of 9th January 1991 were agreed.

2. {\it New members to Working Group 2}

The acting chairman welcomed Cameron Dunn, who takes over from Paul Taylor
as the member from Edinburgh and Shelia Gover as the representative from
Oxford. A request from Alan Wonacott (now at Glaxo) to attend the meetings
was accepted, provided that his employers pay his travel expenses.

3. {\it Study Weekend 1992}

Suggestions for the 1992 Study Weekend were put forward by several members,
Phil Evans suggested a re-working of the topic of Molecular Replacement 
seemed appropriate since the last Study Weekend (1991) had been a revision
of Isomorphous Replacement. Eleanor Dodson suggested data collection, 
particularly on difficult crystals. Kim Henrick suggested that since there 
were many meetings covering crystallography this year then a break with the 
format could be appropriate (for one year only) and suggested a workshop 
on computing aspects such as Unix, Fortran and C. The meeting felt, however, 
that such a proposal would be difficult to organise and could only cater for 
20 or so participants and not the 200+ normally applying for the weekend. 
A joint Study Weekend between CCP4 and CCP11 Biosequence and Structure 
Analysis (SEQNET) was also proposed.

After much discussion the opinion of the meeting was that Molecular Replacement
was the best topic. Eleanor Dodson and Sheila Gover were prepared to organise
the meeting (with assistance from Wojciech Wolf) and they were asked to prepare
a draft schedule of the weekend for the next Working Group 2 meeting. Several 
speakers names were suggested by members for the Study Weekend.

Discussion then turned to a suitable venue for the Study Weekend since it was
felt that the facilities at Daresbury are inadequate and the overflow into the
coffee lounge was inappropriate to the meeting. Two other venues have been
investigated: Chester College and the Lord Daresbury Hotel, both of which have
facilities for up to about 350 people. Chester College provides an appropriate
Lecture Theatre and accommodation on-site in student study-bedrooms but could
only offer two weekends over Easter (April 10/11th or April 24/25th) since the
accommodation is unavailable in term time. The Lord Daresbury has a large 
conference room but it is {\it flat}. The meeting was strongly opposed to the
dates in April and felt that the end of January was the right time of year to
hold the meeting and so the Lord Daresbury Hotel was selected as the venue,
provided that large screens are available for audio-visual relay to the rear
of the hall. Wojciech Wolf is to investigate further.

Finally, the date for the Study Weekend was set as the 31st January/1st 
February, 1991 and Wojciech Wolf reported that he had already earmarked 
\pounds12,500 towards the running costs from CCP4 funds.

4. {\it ESF/CCP4 Workshop at Heidelberg}

Eleanor Dodson provided a report on the meeting at Heidelberg, organised by 
David Wild, on keywording of the CCP4 software and an X-Windows interface. 
David Wild has written an article on the workshop, which is to be published 
in the Newsletter. The workshop produced a list of 18 common keywords and 
their definitions --- Peter Daly distributed a preliminary definition of 
these and their syntax written in BNF notation. Lynn Ten Eyck is reported
as designing a tool to produce menus from syntax diagrams. The discussion 
merged somewhat into the next item on the agenda.

5. {\it Phil Bourne and the Crystallographic Workbench}

Phil Bourne is now ready to release the Crystallographic Workbench software.
Essentially, this is a workstation-based system using his Workbench Control
Language (WCL) to provide an interface to software from CCP4, Hendrickson's 
Laboratory and other sources. He wishes to distribute some of the main programs
of CCP4 with his Crystallographic Workbench and include a note detailing
how users can obtain the full suite from Daresbury. The mood of the meeting
was that the test suite is an appropriate example of the CCP4 software that
can be distributed and welcomed and approved Phil Bourne's request.

Furthermore, the general idea of the Crystallographic Workbench was considered
more fully, since it is close to the work done by David wild. Phil Bourne is
willing to let Daresbury become a beta-test site for his Crystallographic 
Workbench. It was decided that Peter Daly will obtain the CW suite to evaluate
it (in conjunction with other sites) and perhaps a closer collaboration is
an appropriate development. The Crystallographic Workbench uses X and Motif.

6. {\it Proposal from Oxford Molecular}

Oxford Molecular have proposed taking over CCP4 and commercialising the 
software --- full details are not yet known but the suggestion is that
Oxford Molecular will upgrade the programs and documentation and provide
telephone `hot-line' support. The suite would remain free to academic
institutions and typically 25\% of royalties from commercial receipts
would be passed back to CCP4. The meeting felt that any such proposal
should be strongly resisted --- the greatest strength of CCP4 is the 
deposition of software and this would cease under commercial arrangements.

7. {\it Extension of CCP4}

Wojciech Wolf reported that Professor Blow, as Chairman of Working Group 1,
is preparing a submission for the renewal of CCP4, which runs out in December.
This should be ready for the autumn.

8. {\it Newsletter}

Wojciech Wolf reported that Newsletter is in the process of being reproduced
and will be distributed shortly. It was suggested that another Newsletter 
should be produced in the autumn and members were asked to canvas their
institutions for contributions.

10. {\it Space Group generality within CCP4}

Wojciech Wolf thought that .... ?

11. {\it Group Reports}

Don Akrigg has released Darren Flower's modifications to John Priestle's
RIBBON software - it was unclear whether the corrections have been made to
the newer version of the suite that John Priestle has released.

Ian Tickle reported that he has supplied a set of refinement programs to CCP4
for the VAX.

Francesca Young reported that the test suite has been ported to the IBM 
RS/6000 and works well apart from a slight problem with the FFT program, 
which is being fixed.

Both Kim Henrick and Peter Daly have made changes to the suite in terms of
installation and startup --- they disagree on the details and will come to
a mutual agreement at the meeting in Cambridge in April (see below).

12. {\it Any Other Business}

Phil Evans raised the question of Graphics Standards within CCP4 and the use
of John Campbell's XDL\_VIEW routines. The situation was that PLOT84/PLOT9X
are in use but only support Tektronix and the meta-file, users then use a 
program called pltdev (written by Peter Daly) to translate the meta-file to
PostScript, HPGL ot Tektronix. However, this system is to be unsupported in
favour of VOGLE, a public domain graphics package for line drawing that deals 
with PostScript, Tektronix, HPGL and X-Windows. Peter Daly reported that he 
has shipped this to the VAX and it works. Several members were unaware that 
this  package is available on the Daresbury Info-Server. It was stressed by 
Kim Henrick that this is a line drawing package only and that to display 
bit-mapped data the John Campbell's XDL\_VIEW routines are better.

John Campbell raised the question of the implementation of MTZ since some of
the Laue software use LCF files. It was agreeed to hold a workshop at MRC 
during the week 22nd--26th April and Sandra will be encouraged to complete
her work in time for this. A list of people to be invited was drawn up to 
include Phil Evans, Wojciech Wolf, Kim Henrick (organiser), Sandra McLaughlin,
Eleanor Dodson, Peter Daly and Francesca Young.

13. {\it Venue and date of next meeting}

{\sc\small A date for the next meeting was set for Wednesday the 12th June, 
1991, at Birkbeck College, London, for 11-15 am.}

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\centerline{W. Wolf (Secretary)}                 
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