http://www.rjh.org.uk/altair/4k/
I especially like the way he points out that the error
numbers from the pre-Microsoft 4K BASIC are still used
in Visual BASIC today.
Related articles:
http://www.theregister.co.uk/content/4/18915.html
http://www.theregister.co.uk/content/4/18909.html
- John