ZDT 1.3
                            02/08/92
                          Joe Mortensen

ZDT 1.3 corrects an awful!! bug in the print routine.  I changed 
the screen labels to high-bit terminated strings but did not fix 
the print routine to handle these.  ELPSTR in ZDT.A now tests to 
see if bit 7 is set.  If it is, it masks it out, prints the 
character and ends the routine.  ELPSTR still handles null- 
terminated strings, too.  Mike Finn noticed the problem and 
called my attention to it.

With this version I have also reverted to using the DSLIB clock 
routines to maintain universality with Z3Plus.  Only one flavor 
of ZDT again.