4if [ -z $JPP_DIR ]; then
 
    5    echo "Variable JPP_DIR undefined."
 
    9source $JPP_DIR/setenv.sh $JPP_DIR
 
   11set_variable:  DEBUG        SORT_DEBUG        0
 
   12set_variable:  WILDCARD     SORT_WILDCARD     \%
 
   13set_variable   DIR          $JPP_DIR/examples/JAAnet
 
   14set_variable   OUTPUT_FILE  merged.\%.root
 
   17    usage "$script <input file>... [output file]\n" \
 
   18          "Note: If more than one input file is given, the output file must be specified as well."
 
   22    2) set_variable OUTPUT_FILE   $2;&
 
   23    1) set_array    INPUT_FILES   $1;;
 
   24    *) set_array    INPUT_FILES   ${argv[1,-2]}
 
   25       set_variable OUTPUT_FILE   ${argv[-1]}