Subscribed
  
You've told the investment bank's reps that you're "in." You want to participate in the IPO. You've indicated that you'd like to buy 300,000 shares at $16.50, where the indicated offering is. If it goes higher than that, you may or may not subscribe for all 300,000 shares. But, as it stands, on the $16.50 price, you are subscribed to buy 300,000 shares, order good.
Here's to hoping for a hot IPO.