diff --git a/tbox/utils.py b/tbox/utils.py
index 7d32f8dc690809a80540655a25e8fec2f554b97d..73ec554d506fbd70468392746b5890de2e38da2c 100644
--- a/tbox/utils.py
+++ b/tbox/utils.py
@@ -2,13 +2,13 @@
 # -*- coding: utf-8 -*-
 
 # Copyright 2020 University of Liège
-# 
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
-# 
+#
 #     http://www.apache.org/licenses/LICENSE-2.0
-# 
+#
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -23,7 +23,6 @@ Adrien Crovato
 
 def myrange(start, stop, step):
     """Extended range with custom step
-    Adrien Crovato
     """
     vec = []
     i = start
@@ -32,33 +31,34 @@ def myrange(start, stop, step):
         i += step
     return vec
 
-def plot(x, y, xlbl, ylbl, title, invert=False):
+def plot(x, y, cfg):
     """Plot using matplotlib
-    Adrien Crovato
-    @todo extend to pass unlimited number of arguments
     """
     from fwk.wutils import parseargs
     args = parseargs()
     if not args.nogui:
         import matplotlib.pyplot as plt
         # define font
-        font = {'family': 'serif',
-                'color': 'darkred',
-                'weight': 'normal',
-                'size': 16,}
+        font = {'family': 'serif', 'color': 'darkred', 'weight': 'normal', 'size': 16}
         # plot results
-        plt.plot(x, y, 'b-',lw=2)   
-        plt.xlabel(xlbl, fontdict=font)
-        plt.ylabel(ylbl, fontdict=font)
-        plt.title(title, fontdict=font)
-        if invert:
+        plt.plot(x, y, 'b-', lw=2)
+        if 'xlabel' in cfg:
+            plt.xlabel(cfg['xlabel'], fontdict=font)
+        if 'ylabel' in cfg:
+            plt.ylabel(cfg['ylabel'], fontdict=font)
+        if 'title' in cfg:
+            plt.title(cfg['title'], fontdict=font)
+        if 'xlim' in cfg:
+            plt.xlim(cfg['xlim'])
+        if 'ylim' in cfg:
+            plt.ylim(cfg['ylim'])
+        if 'invert' in cfg and cfg['invert']:
             plt.gca().invert_yaxis()
-        #plt.grid(True)
+        # display
         plt.show()
 
 def sort(id, data):
     """Sort data array against id (line connectivity list)
-    Adrien Crovato
     """
     import numpy as np
     # sort id vector
@@ -76,7 +76,6 @@ def sort(id, data):
 
 def read(filename):
     """Read from file and store in data array
-    Adrien Croavto
     """
     import io
     import numpy as np
@@ -89,7 +88,6 @@ def read(filename):
 
 def write(data, name, frmt, dlm, hdr, cmts):
     """Write data array to file
-    Adrien Crovato
     """
     import numpy as np
     print('writing data file ' + name + '.')