The book's flat-floor model: the bond floor is the coupons and par discounted at the
issuer's yield, the option is a call on parity, and the convertible is the two together,
never below conversion value. At the book's inputs the three pieces close at par:
floor 81.79 + warrant 18.21 = 100 at
the issue parity of 75.35. Hover the convertible line with Delta on to read the
slope anywhere along the curve.