Is there a possibility to get "more" lines into the command window (Console)?

When I debug my programs I output quite a bunch of lines to the window and the beginning of the ouput keeps disappearing out of the range I can scroll back the window so I don't see my complete output from the beginning of the program.

How can I get the command window to keep all lines?

(And yes I could as well write it into a text-file as a log, but I'd like to try it like this for a change)