Training melons and watermelons to grow vertically is referred to as trellising and is one of the advantages of growing melons in a high tunnel. Most melon cultivars and personal size (less than 7 pounds) watermelon cultivars are amenable to trellising.
A direct public offering (DPO), like the more traditional IPO, is a stock's introduction to the stock market. The stock is offered to the public for the first time. Unlike an IPO, which utilizes an underwriter to sell shares to the public, DPO shares are purchased directly from the issuing company.
An IPO, to recap, is when the company sells stock to the public. If a firm can convince people to buy stock in the company, it can raise a lot of money. The IPO is seen as an exit strategy for the company founders and early investors to profit from their early risk taking in a new venture.