// transpose the current key of the voice (called on K: or V:)
function key_trans() {
    var	i, n, a_acc, b40,
	s = curvoice.ckey,			// current key
	ti = s.time || 0

	if (s.k_bagpipe || s.k_drum)

		return

	// set the score transposition
	n = (curvoice.score | 0)		// new transposition
		+ (curvoice.shift | 0)
		+ (cfmt.transp | 0)
	if ((curvoice.tr_sco | 0) == n)

	if (i) {				// no chord here
		curvoice.tr_sco += i		// set an enharmonic one
		b40 += i
	}

	s.orig = clone(s)			// keep the original K: definition
	s.k_b40 = b40
    if (!s.k_none)				// if some key
	s.k_sf = abc2svg.b40sf[b40]

	// transpose the accidental list
	if (!s.k_a_acc)
		return
	a_acc = []
	for (i = 0; i < s.k_a_acc.length; i++) {