Could someone explain to me the differences between the various stub conventions?-Stub First-Pay Accrued- -Full Payment (i think this means that if there is a partial period, make the payment as if it was a full period)Could someone explain what the other two conventions dictate?Thank you all in advance.

To my knowledge there are 4 stubs in e.g. an interest rate swap, interest rate cap, or swaption transaction, which are:-Short first stub: the first interest period of e.g. a swap is shorter than the following interest periods, e.g. a swap that starts at (mm/dd/yy) 04/01/04 and ends at 01/01/07. The first interest period is from 04/01/04-01/01/05 and the next are from 01/01/05-01/01/06, 01/01/06-01/01/07.-Long first stub: the first interest period is longer than the following interest periods, e.g. a swap that starts at 04/01/04 and ends at 06/01/07. The first interest period is from 04/01/04-06/01/05 and the next are from 06/01/05-06/01/06, 06/01/06-06/01/07.-Short end stub: the last interest period is shorter than the previous ones, e.g. a swap that starts at 04/01/04 and ends at 06/01/07. The first interest period is from 04/01/04-04/01/05, the 2nd from 04/01/05-04/01/06, the 3rd from 04/01/06-04/01/07, and the last period is from 04/01/07-06/01/07.-Long end stub: the last interest period is longer than the previous ones, e.g. a swap that starts at 04/01/04-06/01/07. The first interest period is from 04/01/04-04/01/05, the 2nd from 04/01/05-04/01/06, and the last period from 04/01/06-06/01/07.Pay accrued means paying the interest that has accrued sofar since the last interest payment date.I know the expression full payment as full first coupon, but it is indeed as you describe it between brackets. Full first coupon is a expression which is very common in the case of an asset swap, where an investor wants to swap the fixed rate on a bond into a floating rate (Libor +/- spread). Suppose the investor wants to enter into a swap between two coupon dates. The investor pays the full coupon instead of interest calculated over the bond's coupon based on the actual days between the swap transaction date and the bond's next coupon date.