INTEGER Input: The I Descriptor

The Iw and Iw.m descriptors are used for INTEGER input; however, the effect of Iw.d is identical to that of Iw. Therefore, we shall only discuss Iw. The general form of the Iw descriptor is as follows:


The meaning of r, w and m are:


Suppose we have the following input and the system ignores spaces.
         1    1    2
12 34  56  78  90