Nodes of different colours represent the following:
Solid arrows point from a submodule to the (sub)module which it is descended from. Dashed arrows point from a module or program unit to modules which it uses.
program volatile_doctest use vecfor_R16P type(vector_R16P) :: pt pt = 4 * ex_R16P + 3 * ey_R16P print "(L1)", 5_I2P == pt endprogram volatile_doctest