[Xy-pic] Tip sizes when using the slides class

[Kristoffer H Rose]

Dear Michael,

If you *do* use PostScript then Ross' suggestion works fine once you read
the documentation of his "line extension" section of the reference manual:
the document

   \documentclass[dvips]{slides}
   \usepackage[all,dvips]{xy}
   \SelectTips{cm}{}   % To compare like with like below
   \begin{document}
   \begin{slide}
   Compare $\xymatrix{A \ar@[|(3)][r] & B}$ with $A\rightarrow B$.
   \end{slide}
   \end{document}

gives appropriately sized arrow heads.  You can even

   \def\myar{\ar@[|(3)]}

(and use \myar instead of \ar) to adjust the size in a central place.

Enjoy,
      Kristoffer

__
Kristoffer H Rose, ph.d. <krisrose@us.ibm.com> +1(914)784-7642/fax:6324
IBM T. J. Watson Research Center, 19 Skyline Dr, Hawthorne NY 10532