Exhibit 3.0 Scripted Demo: Big Data
    This demo lets you test the performance of (changes to) exhibit on
    an artificial large data set.
    File slow.html links to version 3.0.0 of
    exhibit which has a slow loader; fast.html
    links to the current version.  Both load from test.js , which by
    default contains 50,000 items; you can copy varying data sets onto
    test.js to test them. Perl
    file makebig.pl can generate other data
    set sizes.