from _future_ import print_function
import matplotlib.pyplot as plt
import os
import sys
import re
import gc
# Selection of features following "Writing mathematical expresion"tutorial
mathtext_tiles = {
0: "Header demo"
1: "Subscripts and superscripts"
2: "Fraction ,bionomals and stacked numbers"
3: "radicals"
4: "Fonts"
5: "Accents"
6: "Greek Herbew"
7: "Delimeters, functions and symbols"}
n_lines = len(mathtext_titles)