I wrote:
> I've just uploaded an interim release to
>
>   http://www.pogner.demon.co.uk/components/bc/
>
> This includes no new Components, but what it does include is Storage
> Management courtesy of Pat Rogers <[log in to unmask]>.
>
> This has tickled a few compiler bugs, I'm afraid that users of
> ObjectAda 7.1 Special Edition (the one that Aonix have been making
> available to accompany books) should not try this release (the
> previous one is still available at the above site, as bc-19980920.*).

After investigation, I find that you can use ObjectAda 7.1 Special
Edition provided you avoid using Managed Storage or the Dynamic forms
(variants of Queues, Stacks). I've updated the release notes at

  http://www.pogner.demon.co.uk:80/components/bc/release.html