*IOBN
i1, r1: Disk Check control, Unused variable
*IOBN is used to disable the automatic disk check that occurs at the beginning of each simulation. This disk check warns the user if they are running on a disk type that will slow solver performance. The types of disks that are checked for are USB drives, Network connected drives, and encrypted drives. Zero or positive values for i1 will perform the check, negative values will disable the disk check. The real variable r1 is not used at this time, but must be included.