code examples in the user's guide contian instructions
that use javatest_host should be using the evironment variable JAVATEST_HOST
which should be set to the name of the machine running the javatest harness.

for example:
on page .
in the section
-activeHost javatest_host
should be -activeHost ${JAVATEST_HOST}

see pptck users guide for good examples of this environment variable and its use