VTERM_ATTR_REVERSE
state->pen.reverse = 0; setpenattr_bool(state, VTERM_ATTR_REVERSE, 0);
setpenattr_bool(state, VTERM_ATTR_REVERSE, state->pen.reverse);
setpenattr_bool(state, VTERM_ATTR_REVERSE, 1);
setpenattr_bool(state, VTERM_ATTR_REVERSE, 0);
case VTERM_ATTR_REVERSE:
case VTERM_ATTR_REVERSE:
case VTERM_ATTR_REVERSE: return VTERM_VALUETYPE_BOOL;