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_R8P type(vector_R8P) :: pt pt = ex_R8P + ey_R8P + ez_R8P print "(L1)", pt /= 1_I1P endprogram volatile_doctest