Nodes of different colours represent the following:
Solid arrows point from a procedure to one which it calls. Dashed
arrows point from an interface to procedures which implement that interface.
This could include the module procedures in a generic interface or the
implementation in a submodule of an interface in a parent module.
subroutine river_transfer()!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!**** PURPOSE: THIS SUBROUTINE CONTROLS THE CHANNEL ROUTING, NOT USED!!**** CALLED IN: MAIN, "sleeping subroutine"end subroutine river_transfer