040000 tree 52252c37cf5d5c62d2270057e8077b25fdd1ed30	csf_examples
040000 tree 0446e0b9cbb062ed414fee908ca13c029463f05d	guides
100644 blob fe026ffcc50f020ba2a0922c14e7121bf3d6d0f4	introduction_ahab.txt