How can I get more space on the screen? Refer to your video card documentation ──────────────────────────────────────────────────────────────────────────────
Look to your video card documentation for anything that references a video mode that supports up to 132 columns and more than 25 rows - 60 rows is ideal.
Convert the mode number to decimal and enter the number into the Screen Mode Change item of the Display sub-menu of the options menu, save the settings, quit the program and re-run it. The program will automatically change to that video mode.