Portability Environment for Fortran poor people.
PENF allocatable memory facility.
PENF bit/byte size functions.
PENF global parameters and variables.
PENF string-to-number (and viceversa) facility.
Nodes of different colours represent the following:
Solid arrows point from a file to a file which it depends on. A file is dependent upon another if the latter must be compiled before the former can be.