Small but important change to the JCMD documentation needs to be in JDK7 u6.
This is a change to the nroff code for the man page.
There are only a few changes to the JCMD man pages. For example:
"When a process id is specified on the command line, jcmd sends the diagnostic command request to the process with this id."
was changed to
"When a main class is specified on the command line, jcmd sends the diagnostic command request to all Java processes with this main class."
All the changes can be seen at this webrev: