f = CurrentFont()

# two interpolatable, different glyphs
a = f["A"]
b = f["B"]

# multiply works as scaling up
d = a * 2
# or
d = 2 * a
f.insertGlyph(d, name="A.A_times_2")

# # division works as scaling down
d = a / 2
f.insertGlyph(d, name="A.A_divide_2")

# addition: add coordinates of each point
d = a + b
f.insertGlyph(d, name="A.A_plus_B")

# # subtraction: subtract coordinates of each point
d = a - b
f.insertGlyph(d, name="A.A_minus_B")

# combination: interpolation!
d = a + .5 * (b - a)
f.insertGlyph(d, name="A.A_interpolate_B")