I haven't built in a "scroll sideways" interface option at this stage. Personally I wouldn't because of the artifacts you get when updating the screen buffer, so "smoothly scrolling sideways text" probably isn't going to work ... unless you can solve the timing issues.
You could do it to an extent by doing something like:
- Carriage-return (take you to column 1)
- Clear to end of line
- Cursor position to desired column
- Draw desired text
I suggest you make one up and try it out - the parts are only about $5 (depending on how much the connector costs).
I think it would be perfect for something like a home security system / weather monitoring where you want to have more text than you can fit onto an LCD, and don't mind a bit of flicker when it updates.