Dear category theorist, This is to announce yet another BUG FIX release of my DIAGRAM DRAWING PACKAGE, XY-pic: version 2.12. It fixes the following user visible bugs in version 2.11: * No conflict with `AMS-LaTeX' version 1.2 (SEE BELOW). * No conflict with Karl Berry's `eplain' (SEE BELOW). * Curves with explicit control are now right [Sjoerd Crans]. * Directional vectors no longer invalidate the Xy-state [Luc van Eycken]. * Tips on zero-sized turns no longer reversed [Jorge Almeida]. * Curves no longer overlap the surrounding text. * Numerous documentation fixes in the Reference Manual. * Short steep segments now placed correctly [thanks, Ross]. I am sorry to announce this very interim version which is necessary because of a change in an internal function of AMS-LaTeX [sic]. Thus ** PLEASE UPDATE TO VERSION 2.12 IF YOU USE AMS-LaTeX *** The release of the `real' version 3 (no longer in beta-test) is imminent so you need not update otherwise unless any of the other bugs have bothered you (or you desperately need one of the additions described below). There is ONE IMPORTANT CHANGE in the v3 extensions of this version: the \arrow command has been renamed to \ar in order to make diagrams more concise and avoid conflict with Karl Berry's `eplain', however, using the `v2' compatibility option will still define \arrow (as well as \stop and \merge that are also in conflict with existing names on some systems). - o - One extension and one feature have been added with this release: * \xyoption{cmtip} allows the use of arrow tips that resemble those of D. Knuth's Computer Modern and Computer Concrete fonts. * \xyoption{poly} supports drawing of regular polygons (by Ross Moore). Version 3 will also have a special input mode for `knots and links'. - o - Xy-pic can be retrieved by anonymous ftp from ftp.diku.dk : /diku/users/kris/TeX/ ftp.mpce.mq.edu.au : /pub/maths/TeX/ (see the README file as to the exact location below that), from CTAN : /tex-archive/macros/generic/diagrams/xypic and also through the World Wide Web (see below). - o - NEWS: there is now a World Wide Web HOME PAGE for Xy-pic in <URL: http://www.diku.dk/users/kris/Xy-pic.html> which includes pointers to the sources as well as some TUTORIAL PAPERS on Xy-pic: * K.Rose: Xy-pic and Notation for Categorical Diagrams. * R.Moore: Typesetting Neural Nets with Xy-pic. (for people without WWW access these are also available on the ftp servers in files xy/papers/ecct-94.ps and xy/papers/NeuralNets.ps). - o - In the hope that you will like the new things, Kristoffer Rose -- Kristoffer H{\o}gsbro ROSE <kris@diku.dk> DIKU, Universitetsparken 1, 2100 K{\o}benhavn {\O}, DANMARK Phones: +45 35321400 direct: +45 35321420 fax: +45 35321401 World Wide Web <URL: http://www.diku.dk/users/kris/>