As requested I've UL these files to the Psion files section of the Palmtop Forum.
There are two icon files: TUBE.pic which initially came with this program and 
TUBE3a.pic which I created for the 3a simply for asthetic reasons.
The OPL file here has been very slightly altered from the original in order to
look for TUBE3a.pic rather than Tube.pic but that is the only modification I've
made.

The OPA as it stands will work fine on a series 3.  If you wish to run this
program on a 3a, I suggest you translate the OPL instead (it'll look nicer).

For installation instructions and the authors notes read TUBE.doc

If you DL S3ADRA.ZIP from the libary it contains a PIC file of the
London underground (just incase you were interested).

Neil (Staffs. UK)