ZC2_IMPLICIT_OPEN
if (!(zc == ZC2_IMPLICIT_OPEN || zc == ZC3_EXPLICIT_OPEN))
if (zc == ZC2_IMPLICIT_OPEN)
if (zsp->z_cond == ZC2_IMPLICIT_OPEN) {
(!explicit && zc == ZC2_IMPLICIT_OPEN))
if (explicit && zsp->z_cond == ZC2_IMPLICIT_OPEN)
zsp->z_cond = ZC2_IMPLICIT_OPEN;
case ZC2_IMPLICIT_OPEN:
if (zsp->z_cond != ZC2_IMPLICIT_OPEN)
if (zc == ZC4_CLOSED || zc == ZC2_IMPLICIT_OPEN ||
if (zc == ZC2_IMPLICIT_OPEN || zc == ZC3_EXPLICIT_OPEN)
if (zc == ZC2_IMPLICIT_OPEN || zc == ZC3_EXPLICIT_OPEN)