This UIC is part of the "C" compiling system update for I and D space. The complete set of UICs include: 1. [5,4] - A complete description of this submission as well as a change to the compiler. 2. [5,15] - Changes to c.olb library routines. 3. [5,16] - Changes to c.olb library routines. 4. [5,24] - Changes tp cx.olb library routines.