Whhen you expand a ROM from 4 to 6 megabytes, can you use the new empty space for new areas and text?
As it says in the manual, this is really just a placeholder for a future version. Temporal Flux is capable of using the extra space in the WIP version.
I tried doing this thing with a text hack and it erased over other parts of the text in different locations.
That really has nothing to do with expanding the ROM. Strings are stored "local" which means they pretty well have zero space to expand. Each set of strings cannot use more than space than it originally did. Temporal Flux removes any extra length so you do not overwrite other parts of the game and ruin your ROM.
The next version will support expandable strings, though this has not been implemented yet.
---T.Geiger