
Principal changes in Knowledge Explorer version 2.2:
attribute change for relation & method
    r_format="class:1; class:2; ..."
	-> format=[class:1; class:2; ...]	# relation
	-> format=[class:1, class:2, ...]	# method
    r_meaning=" ... class:1 ... class:2 ..."
	-> meaning=[ ... $1 ... $2 ...]
allow nested control structures
allow name=value for all kformat
allow !command for all kformat
add KEHOME/homepage directory
