The /real qualifier tells KAP what the Digital Fortran
compiler default size for REAL variables is in bytes, N, where
REAL*N can be 4 or 8. To change the default size of REAL variables,
for example, from 4 to 8, first, set the Digital Fortran compiler
qualifier /r=8 . Next, tell KAP the new size with the
/real=8 qualifier.