The following is suggested by Max Kelly's comments and some discussions at Como. We have to be prepared for the worst scenario, that blackboard facilities will get worse, and it may even get to a stage where conference administrators wonder why mathematicians are not using powerpoint and computer presentations like everyone else! People should be aware that Latex facilities for slides are good: just use \documentclass{slides} \begin{document} \raggedright \begin{slide} ......\end{slide} etc. A colleague here also got splendid results using the colour package (I need to investigate this!). I also like to use in the preamble \parindent=0pt \parskip=1ex and to use almost pidgin English, so that the impact is visual, with as few words as possible. What is not so clear is how to use say animated gif files in such a presentation. For this I have used a browser presentation using html files, and converting tex into html using tth http://hutchinson.belmont.ma.us/tth/ I hope this helps people. We could then ask conference centres to provide projection facilities, if these are a requirement of users. Ronnie Brown -- Prof R. Brown, School of Informatics, Mathematics Division, University of Wales, Bangor Dean St., Bangor, Gwynedd LL57 1UT, United Kingdom Tel. direct:+44 1248 382474|office: 382475 fax: +44 1248 361429 World Wide Web: home page: http://www.bangor.ac.uk/~mas010/ (Links to survey articles: Higher dimensional group theory Groupoids and crossed objects in algebraic topology) Symbolic Sculpture and Mathematics: http://www.bangor.ac.uk/SculMath/ Centre for the Popularisation of Mathematics http://www.bangor.ac.uk/cpm/