How to use the ford.utils.sub_links function in FORD

def make_links(self,project):
        """
        Process intra-site links to documentation of other parts of the program.
        """
        self.doc = ford.utils.sub_links(self.doc,project)
        if 'summary' in self.meta:
            self.meta['summary'] = ford.utils.sub_links(self.meta['summary'],project)
        recurse_list = []

        if hasattr(self,'variables'): recurse_list.extend(self.variables)
        if hasattr(self,'types'): recurse_list.extend(self.types)
        if hasattr(self,'enums'): recurse_list.extend(self.enums)
        if hasattr(self,'modules'): recurse_list.extend(self.modules)
        if hasattr(self,'submodules'): recurse_list.extend(self.submodules)
        if hasattr(self,'subroutines'): recurse_list.extend(self.subroutines)
        if hasattr(self,'functions'): recurse_list.extend(self.functions)
        if hasattr(self,'interfaces'): recurse_list.extend(self.interfaces)
        if hasattr(self,'absinterfaces'): recurse_list.extend(self.absinterfaces)
        if hasattr(self,'programs'): recurse_list.extend(self.programs)
        if hasattr(self,'boundprocs'): recurse_list.extend(self.boundprocs)
        # if hasattr(self,'finalprocs'): recurse_list.extend(self.finalprocs)

def make_links(self,project):
        """
        Process intra-site links to documentation of other parts of the program.
        """
        self.doc = ford.utils.sub_links(self.doc,project)
        if 'summary' in self.meta:
            self.meta['summary'] = ford.utils.sub_links(self.meta['summary'],project)
        recurse_list = []

        if hasattr(self,'variables'): recurse_list.extend(self.variables)
        if hasattr(self,'types'): recurse_list.extend(self.types)
        if hasattr(self,'enums'): recurse_list.extend(self.enums)
        if hasattr(self,'modules'): recurse_list.extend(self.modules)
        if hasattr(self,'submodules'): recurse_list.extend(self.submodules)
        if hasattr(self,'subroutines'): recurse_list.extend(self.subroutines)
        if hasattr(self,'functions'): recurse_list.extend(self.functions)
        if hasattr(self,'interfaces'): recurse_list.extend(self.interfaces)
        if hasattr(self,'absinterfaces'): recurse_list.extend(self.absinterfaces)
        if hasattr(self,'programs'): recurse_list.extend(self.programs)
        if hasattr(self,'boundprocs'): recurse_list.extend(self.boundprocs)
        # if hasattr(self,'finalprocs'): recurse_list.extend(self.finalprocs)
        # if hasattr(self,'constructor') and self.constructor: recurse_list.append(self.constructor)
        if hasattr(self,'args'): recurse_list.extend(self.args)

def make_links(self, project):
        """
        Process intra-site links to documentation of other parts of the program.
        """
        self.doc = ford.utils.sub_links(self.doc,project)
        if 'summary' in self.meta:
            self.meta['summary'] = ford.utils.sub_links(self.meta['summary'],project)

        # Create links in the project
        for item in self.iterator('variables', 'types', 'enums', 'modules',
                                   'submodules', 'subroutines', 'functions',
                                   'interfaces', 'absinterfaces', 'programs',
                                   'boundprocs', 'args', 'bindings'):
            if isinstance(item, FortranBase):
                item.make_links(project)
        if hasattr(self, 'retvar'):
            if self.retvar:
                if isinstance(self.retvar, FortranBase):
                    self.retvar.make_links(project)
        if hasattr(self, 'procedure'):
            if isinstance(self.procedure, FortranBase):
                self.procedure.make_links(project)

def make_links(self, project):
        """
        Process intra-site links to documentation of other parts of the program.
        """
        self.doc = ford.utils.sub_links(self.doc,project)
        if 'summary' in self.meta:
            self.meta['summary'] = ford.utils.sub_links(self.meta['summary'],project)

        # Create links in the project
        for item in self.iterator('variables', 'types', 'enums', 'modules',
                                   'submodules', 'subroutines', 'functions',
                                   'interfaces', 'absinterfaces', 'programs',
                                   'boundprocs', 'args', 'bindings'):
            if isinstance(item, FortranBase):
                item.make_links(project)
        if hasattr(self, 'retvar'):
            if self.retvar:
                if isinstance(self.retvar, FortranBase):
                    self.retvar.make_links(project)
        if hasattr(self, 'procedure'):
            if isinstance(self.procedure, FortranBase):