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.
IPO means buying shares from the primary market. By primary it means directly from the company. After IPO period is done, the shares become a part of secondary market. In the secondary market, shares are available to all and hence subjected to a lot of ups and downs. The benefit of buying shares in IPO is that you get to have the first mover advantage. That means if a known and reputed company comes up with an IPO offer, then, you get to buy their shares at a smaller price.