 It does a reasonable job and sensibly provides lots for the reader to do . It 's quite honest about the [ ZX81 ] ' s shortcomings and provides hints and tips for ways round them ... Best of all , the manual is complete and comprehensive . There 's some fairly advanced and often undisclosed information in there . The beginner won 't understand it for a long time but if he or she learns some more advanced ideas , the manual is ready for them . 
