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.
elemental function slen_trim(self)result(l)!< Return the length of a string, ignoring any trailing blanks.!<!<```fortran!< type(string) :: astring!< astring = 'Hello World! '!< print "(L1)", astring%len_trim()==len_trim('Hello World! ')!<```!=> T <<<class(string),intent(in)::self!< The string.integer::l!< String length.if(allocated(self%raw))thenl=len_trim(string=self%raw)elsel=0endif endfunction slen_trim