diff --git a/python/damask/_asciitable.py b/python/damask/_asciitable.py
index de7596aea..9d762369a 100644
--- a/python/damask/_asciitable.py
+++ b/python/damask/_asciitable.py
@@ -385,3 +385,38 @@ class ASCIItable():
     self.data = np.loadtxt(self.__IO__['in'],usecols=use,ndmin=2)
 
     return labels_missing
+
+# ------------------------------------------------------------------
+  def data_write(self):
+    """Write current data array and report alive output back."""
+    if len(self.data) == 0: return True
+
+    if isinstance(self.data[0],list):
+      return self.output_write(['\t'.join(map(self._quote,items)) for items in self.data])
+    else:
+      return self.output_write( '\t'.join(map(self._quote,self.data)))
+
+# ------------------------------------------------------------------
+  def data_writeArray(self):
+    """Write whole numpy array data."""
+    for row in self.data:
+      try:
+        output = list(map(repr,row))
+      except Exception:
+        output = [repr(row)]
+
+      try:
+        self.__IO__['out'].write('\t'.join(output) + '\n')
+      except Exception:
+        pass
+
+# ------------------------------------------------------------------
+  def data_append(self,
+                  what):
+    if isinstance(what, str):
+      self.data += [what]
+    else:
+      try:
+        for item in what: self.data_append(item)
+      except TypeError:
+        self.data += [str(what)]