FEEDER_MATRIX
desc->type = FEEDER_MATRIX;
c->feederflags |= 1 << FEEDER_MATRIX;
{ FEEDER_MATRIX, 0, 0, 0, 0 },
if (f == NULL || f->desc == NULL || f->desc->type != FEEDER_MATRIX ||
else if (f->desc->type == FEEDER_MATRIX) \