How to add additional text to a scrolling text page?

I have done that, Bob - thanks for your reply.

I have managed to add two more entries, but after that I can't add any more.

The list does not move up, so it does not allow me to add more. Even if I put my cursor at the end of the last line and press Enter blindly (without being able to see what I have typed), that entry does not appear when I click on the two little >> in the top right-hand corner, if you know what I mean.

I don't know if it makes any difference but the 'Sound Credits and In order and where known' are in a different 'box' to what follows because those two lines of text at the top are centered and what follows, in another box, is left-aligned.

Should everything be in one 'box' (for want of a better word)?

Thanks again.