d. 
 
   3)  If an I/O error occurs while reading or writing the indicated 
       file, the error will be diagnosed by routines called by this 
       routine.  The file may be corrupted. 
 </PRE>
<h4><a name="Files">Files</a></h4>
<PRE>
 
   See the EK Required Reading for a discussion of the EK file 
   format. 
 </PRE>
<h4><a name="Particulars">Particulars</a></h4>
<PRE>
 
   This routine operates by side effects:  It appends a new, empty 
   record structure to an EK segment.  The ordinal position of t