Field help (AP2NBREC) 

The number of records is used to limit the number of lines presented in the list.

For performance reasons linked to the flow of data sent to the client workstation, it is recommended to limit to a reasonable number N of lines (between 10 and 30 for example). This is practical to use because a button used to read an additional N lines is displayed at the end of the list and it can be sued as many times as required. It is therefore possible to successively display N, 2N, 3N, 4N... lines.

It is nevertheless possible to go beyond the values shown above.