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.
program volatile_doctest use vecfor_R4P type(vector_R4P) :: pt pt = 4 * ex_R4P + 3 * ey_R4P print "(L1)", 5._R8P == pt endprogram volatile_doctest