9.5D1.

Change paragraph a. under rule 9.5D1 to read as follows:

a. Discs/Disks. Give the diameter of the disc or disk in inches, to the next 1/4 inch up.

1 computer disk : col. ; 5 1/4 in.

1 computer laser optical disc : col. ; 4 3/4 in.

See also:

9.5D. Dimensions