040000 tree 1776d129601775104fad8d19a0ee4b6c676542ba	linux
040000 tree 0b4f78a9e21127a5a2fda9e100d5ee9dd2310362	mac
040000 tree 13a9f4b1febd3fbc508e767c191a8e2b33801f8d	oophm
040000 tree 4a3bdc3f35de23102aa25e61d7b5f48b708c97a1	windows