00642nam a2200205Ia 4500003000400000005001700004008004100021020001500062040001800077041000800095082002200103100001900125245005000144250001200194260004600206300002400252650004500276650005400321650006100375OSt20230802103637.0210716s1983    xx            000 0 und d  a085312700X  cAIMIT LIBRARY  aeng  a005.101 21bMOOL  aMoore, Lawrie.  aMastering the zx spectrum /cBy Lawrie Moore.  a1st ed.  aEngland :c1983.bEllis Horwood Limited ,  a180p. ;bPBc25 cm.  aGetting information in and displaying it  aLooping through data values and making selections  aUsing control codes and defining your own new characters