I can't find my original copy of the game so I am working on the recent free download and DOSbox. The game screen is only just larger than a 1/4 of the 1024x768 screen, (more or less the size of the DOSbox screen come to think of it) and is difficult to play in. Hardly enough room to swing a penknife.
? Please
Er...whoops! I think I answered my own question - alter the size of the DOSbox to full screen as per the readme file? I haven't tried it yet but it seems reasonable.
Sorry.