Surprisingly, this actually made me laugh - even though I had seen many of these mistakes before, and I was less than amused just after having bought the machine.
I think there are two morals here: Firstly, that a spell checker is not an adequate tool for checking the accuracy of a document. Secondly, that writing computer manuals is a skill that requires not only an excellent grasp of grammar, but also a clear and concise writing style. That is why 'technical author' is a profession in itself. Clearly MicroDigital could not afford to employ one.
Personally, I will never again buy any product from a company that produces written material of poor quality. In the case of MicroDigital, I should have been forewarned by some of their advertisements in Acorn User. This is not because I despise people that can't spell or punctuate correctly (I don't), but because the failure to recognise this as a problem and rectify it is often indicative of some deeper malaise.
Any mistakes in the above posting are - of course - deliberate, and were included for ironic effect.