size 400,400
xrange -6,6
yrange -6,6
fontfamily 22px Arial
# you can use a single space for separation in formula...
# use double space to create new word
string blue,-5,3,H_3O^+ + OH^-  \u2192 2H_2O
# you can use a single space for separation in formula...
string red,-5,-3,H_3 O^+ + OH^\u2212  \u2192 2H_2 O
