First, there was Version 1 - a Windows programme used for many years until September 2012.
Then came Version 2 - a browser implementation, using Adobe Flash. This version came to an end as Flash was not supported after December 2020.
So now we have Version 3 - which uses the most modern version of the browser language, HTML 5.
Members can no longer use versions 1 or 2, and version 3 is well endowed with explanatory notes on the BBO site and on Youtube.
We have, therefore, removed all our "howto" pages because they are now out of date and usually unnecessary.