errorTable method Null safety

Implementation

Widget errorTable(double widthCM) => table(widthCM, [
      row([cell(space(3)), cell(text('Error', align: bpCenter))]),
      row([
        cell(text('0', align: bpCenter)),
        cell(list([
          text('\u200ay\u00F70,'),
          sqrtText('\u221A   '),
          space(-3.4),
          text('-4', scale: 0.75, offset: const Offset(0.2, 0.3)),
          text(',...')
        ]))
      ]),
      row([
        cell(text('1', align: bpCenter)),
        cell(text('\u200aFLOAT>9,GTO.>9,WINDOW>7,F>5', scale: 0.9))
      ]),
      row([
        cell(text('2', align: bpCenter)),
        cell(text('\u200aMASK,B,RL,RR>WSIZE;WSIZE>64', scale: 0.9))
      ]),
      row([
        cell(text('3', align: bpCenter)),
        cell(list([
          text('\u200aR'),
          space(-0.8),
          text('n', scale: 0.80, offset: const Offset(0, 0.57)),
          text('>MEM')
        ]))
      ]),
      row([
        cell(text('4', align: bpCenter)),
        cell(list(
            [text('\u200aLBL?'), space(-0.7), text(',GTO>MEM,PRGM>203')]))
      ]),
      row([
        cell(text('5', align: bpCenter)),
        cell(list([
          text('\u200a>4'),
          text('RTN', offset: const Offset(0.2, 0.2), scale: 0.9, box: true)
        ]))
      ]),
      row([
        cell(text('6', align: bpCenter)),
        cell(text('\u200aR\u2260FLOAT'))
      ]),
    ]);