[J3] (SC22WG5.6266) Fortran 90 and BOZ literals

[Steve Lionel]

I am working on a "Doctor Fortran" post about BOZ constants, and ran 
across something very odd in Fortran 90:


R408 binary-constant is B ’ digit [ digit ] ... ’
                      or B
Constraint: digit must have one of the values 0 or 1.

R409 octal-constant is O ’ digit [ digit ] ... ’
                     or O
Constraint: digit must have one of the values 0 through 7.

R410 hex-constant is Z ’ hex-digit [ hex-digit ] ... ’
                   or Z

The text never explains what a bare B, O or Z means. This is gone in 
Fortran 95 and I didn't see any mention of it in the three Fortran 90 
corrigenda. What was this supposed to be? (If you get this on the J3 
list, please reply to the WG5 list - thanks.)

Steve