REAL Input: The F and E Descriptors

The Fw.d, Ew.d, ESw.d, ENw.d, Ew.dEe, ESw.dEe and ENw.dEe descriptors are used for REAL input; however, they all have the same effect as Fw.d. Therefore, we shall only discuss Fw.d. The general form of the Fw.d 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 3.4  56E 78.  90