This is right off of the PSI website, word for word.
"All examinations are open book. It is okay to use original
copyrighted material, and a silent, nonprinting,
nonprogrammable calculator. Copies of the Washington state
RCW/WAC downloaded from the internet are acceptable,
provided they are in a binder. Copyrighted material may have
highlighting, underlining, and index tabs (permanent or
temporary) prior to entering the examination area. Post-It,
sticky, repositionable and other types of notes that are
removable are not permitted. References may not be
written in. Two sheets of paper and a pencil will be collected
at end of the examination"
I guarantee that if you tried to bring in your OWN copyrighted material in; it wouldn't fly! Sometimes you have to be realistic!