| Mode | User |
| R
= Read | ANY
= Any user |
| L
= Lock (allows exclusive access to the file) | AC
= Member of this account only |
| A
= Append (implicitly specifies L also) | GU
= Member of this group only |
| W
= Write (implicitly specifies A and L also) | AL
= Account librarian user only |
| X
= Execute | GL
= Group librarian user only |
| S
= Save | CR
= Creating user only |
