To enable Java Flight Recording, a JVM needs to have the options -XX:+UnlockCommercialFeatures -XX:+FlightRecorder present at startup. However, these options are being ignored when specified as java_arugments or java-vm-args in HTML tags or JNLP files.

There is is a workaround by setting the system environment variable _JAVA_OPTIONS,
but it seems this is not currently documented.

This bug is a request to document the proper way to enable java Flight Recording for running
java applet.