permissions.md

PERMS

Structure

            u   g   o
            7   5   4
          /     |     \
type:   r w x  r w x  r w x
repr:   4 2 1  4 2 1  4 2 1
enabl:  1 1 1  1 0 1  1 0 0
res:    4 2 1  4 0 1  4 0 0
          7      5      4