Prepend text in text file

Hey guys

i'd like to create a log file, however i have some problem to display log line by line, most recent first.

how can i add text without loosing previous datas ? Solved thanks to the end of line constant

More how can i add a scrollbar on the right when the text box become too small ?  Ok, so just right click -> visible items -> scroll bar xD

nvm, all problem are solved

Thanks in advance