The (very large) data files displayed by JIV will be
cached by your web browser if you set its disk-cache size to a
large enough value. If a data file is cached locally, it will
load a lot faster next time when you display it in JIV.
Some web browsers do not properly free-up the
allocated memory after the applet is disposed of. Hence, if you
are starting JIV several times in a row, then your browser's
process size may become quite large. If this is a problem,
simply restart the browser to free-up the memory.