Yacas has been built for debian with the following configure invocation: ./configure --prefix=/usr --with-numlib=native \ --enable-server --enable-proteus \ --sysconfdir=/etc --disable-rpath This uses the native yacas number library in favor of the GNU multi-precision arithmetic library, and it also allows the use of the server mode (see the reference manual in the Yacas documentation in the yacas-doc Debian package). Help within Yacas can be obtained by typing ?? or ?function for specific help on a function. In the default installation for Debian, the help system uses www-browser which is derived from /etc/alternatives. If you want to reset it to your own favorite browser, put the following in your $HOME/.yacasrc SetHelpBrowser("iceweasel"); for example, to use iceweasel as the help browser. Gopal Narayanan Sat Feb 12 20:50:47 EST 2005