There are 2 different binaries, "visualworks" and "vwsybase.sun4" in
/usr/local/visual/bin. The first one is the plain Smalltalk system, the
second one contains additional stuff to connect to a sybase server.

A user has to use it as follows assuming "/usr/local/visual/bin" is 
in their path.

visualworks /usr/local/visual/image/visual.im

OR

vwsybase.sun5 /usr/local/visual/image/visual.im

They can also copy the image to their home directory, that way their
env will persist with each session. This is because Smalltalk stores
the whole system state in the image file.