Thanks.
The screen scrolling rather than refresh is bog standard in all modern adventure authoring systems. You'll find that it's invaluable, as you can scroll back to see past responses. One of the things I hate about Adventuron is that it doesn't do this, so your history is gone every time you move to a new location.
If you're up for a challenge, try to solve the game in the minimum number of moves. You'll need to visit London and the Hindenburg at least once and the other time periods at least twice. If you're interested, you can also find a map and solution on my GitHub page for the game. You might like to compare your map with mine.