anchor.diff:  set "ECHOVARS.D=%LCALL% :EchoVars.Debug"
   set "ECHOSVARS.V=%LCALL% :EchoStringVars.Verbose"
   set "ECHOSVARS.D=%LCALL% :EchoStringVars.Debug"
  +set "ECHOVAL=%LCALL% :EchoVal"
  +set "ECHOVAL.D=%LCALL% :EchoVal.Debug"
   set "+INDENT=%LCALL% :Debug.IncIndent"
   set "-INDENT=%LCALL% :Debug.DecIndent"
   :# Variables inherited from the caller...
  
positive.code: :#   2020-01-13 JFL Added routine :is_newer.                                  #
  :#   2020-02-14 JFL Added routines :is_empty_dir, :has_files, :has_dirs,      #
  :#		    :test_errorlevel                                          #
  :#		                                                              #
  :#          Copyright 2016 Hewlett Packard Enterprise Development LP         #
  :# Licensed under the Apache 2.0 license  www.apache.org/licenses/LICENSE-2.0 #
  
negative.code: :#                  %ECHOSVARS%	    Echo ARG1 before each variable.           #
  :#                  %ECHOSVARS.V%   Idem, but display them in verb. mode only #
  :#                  %ECHOSVARS.D%   Idem, but display them in debug mode only #
  :#                                                                            #
  :#                  %ECHOVAL%       Echo the value of variable ARG1           #
  :#                  %ECHOVAL.D%     Idem, but display it in debug mode only   #
  :#                                                                            #
  :#                  %IF_DEBUG%      Execute a command in debug mode only      #
  :#                  %IF_VERBOSE%    Execute a command in verbose mode only    #
  