I recently put down some antique longleaf pine flooring. As antique flooring goes there are many unique nail holes and some small cracks in the wood. I have noticed with some professional refinishing jobs these areas are mixed with some material and covered to accent the uniqueness. Sometimes they are stailed darker than what the rest of hte wood is. I would appreciate any help with what can be used to seal these holes and cracks and possibly stain them seperate from the rest of the flooring. Thanks! BBRAUN