function log_state()
	log(3, {name='state', Ballp=Ballp, Ballv=Ballv, A=A, B=B})
end
-- for section delimiters we'll use specific Unicode box characters
function log_start(name)
	log(3, '\u{250c} ' .. name)
end
function log_end(name)
	log(3, '\u{2518} ' .. name)
end
function log_new(name)
	log_end(name)
	log_start(name)
end