Documentation for TubeFinder 2.2
--------------------------------
Update: 12th April 1996 - Series 3 module retranslated to fix a bug!

Calculates simple routes round the London Tube system.

Based on public domain tube database and search algorithm of Russ Heath.
Not *guaranteed* to find the quickest route, but it *will* get you there!

This version released as freeware.

v2.2 features an update to the search algorithm, removing redundant searches.
It should now find single interchange cases. It also includes a major update
to the tube station database - it is now organised by zones to aid searching.
v2.1 is v2.0 re-done to work in 3 or 3a mode depending on which machine
it's being run on.
v2.0 was v1.0 plus some extra work done by Jan Willem Ruys

Installation:
==============
Put the TUBE.OPA file in an \APP directory on any drive and install
using Psion-I.
Make a TUBE subdirectory from the same \APP directory (i.e. \APP\TUBE)
and put all the other files there, apart from TUBE.TXT, the one you're
reading now! 8-)

v2.2 Martin Cockerell, January 1996
v2.1 Steve Litchfield, October 1995

PS. There is an option to set default departure and arrival stations,
by modifying the .dbf file which you can set-up as M:\OPD\TUBE.DBF
The first field should contain your desired departure station,
and the second field your desired arrival station. If this database
is not found, defaulting is skipped.
