The best ways to contact us are:
Using the report form, most fields are optional, but it helps us sort out problems if you fill them in. If you run it from Catacomb the save profile option saves you from having to retype them after the first time.
With the Java Runtime Environment Catacomb can run for hours without
problems. With netscape and other Web browsers it crashes the browser
very frequently on some platforms. At present the only thing to do is
kill the crashed browser and start again. Under Windows you can do
this from the Task Manager. Under UNIX, you can do this from top
or with the command killall -9 netscape.
If you don't have killall you can look up the process ID with
ps and kill that. I have a window manager menu item set to
execute the command
killall -9 /usr/lib/netscape/45/navigator/navigator-smotif.real
which is often handy, not only with Catacomb.
It is well worth reading the graphs section in the user interface documentation. The behavior is predictable, if complicated.
However, you can also do everything by hand. For example, start Catacomb; select Numerics from the objects menu; click the diffeq box for the differential equation calculator, which also brings up a graph of the results. In the data menu select edit config. Among other things there are sliders for the minimum and maximum x and y values.
Put the mouse over the slider, and type the number you want at the keyboard. Press the return key when you've finished for the value to take effect.
There is a reset button at the top left which puts everything back how it was to start with.