[Koha-devel] Turn on DEBUG for Koha Plack instance

Hi all, How do you (temporarily) turn on DEBUG mode for Koha Plack? I looked inside and out and nothing I tried seemed to work? David Cook Systems Librarian Prosentient Systems 72/330 Wattle St Ultimo, NSW 2007 Australia Office: 02 9212 0899 Direct: 02 8005 0595