Where do I enter a promotional code on national express?

I'm trying to book train tickets and have a promotional code but during the process of booking them i have not seen an option to enter the code. Could anyone help ? :)

Hi, I write something simple, see below, and it is right now supposed to only just allow user to various data. I think what I have done should work as is, however, it doesn't even though code compiles without compiler errors which is what sort of confuses...

Some time back, I came across this list of funny code comments which have been passed around the internet for ages... For the sake of all those programmers who are toiling away at 4 am in the night/morning hoping to make it work, having grandiose notions...

In Visual Basic Express 2010 when I'm writing in View Code, sometimes my code gets very long and would require the reader to scroll over far using the horizontal scroll bar to see the rest. Now that is horrible so I'd like to put some code on the next...

i have recently started programing using microsoft visual c++ 2010 express and the error "Error: identifier "cout" is undefined" keeps coming up when ever i type cout or cin . also it worked before when i made a simple calculator...

YES, I would like to redeem Membership Rewards points for this order. You will be prompted to enter the 4-digit American Express security code located on the front of your card to check and redeem your Membership Rewards Points. by checking this box...