\begingroup
      \input{T1Def.tex}

     \begin{NiceTabular}{|wl{\ColOne}|wl{\ColTwo}|}\hline
         %Line 1: Global title
         \Block[c]{1-2}{\titleTable}&\\\hline
         %Line 2: Title of the three columns
         \Block[c]{1-1}{Definitions} & 
         \Block[c]{1-1}{Series} \\\hline
         %Line 3: The definition and the area of the series.
         \Block[l]{\value{TOneSeriesPart}-1}{%
                   \deflength{\MathContentSize}{\ColOne-2\tabcolsep}%
                   \vspace{\TOnePushDef}%
                   \hspace*{\TOneMoveDef}\smash{\TOneDef{\MathContentSize}}}&
         \Block[c]{\value{TOneSeriesPart}-1}{%
                   \deflength{\MathContentSize}{\ColTwo-1\tabcolsep}%
                   \TOneSums{\MathContentSize}} \\
         \AddBlankLines{\value{TOneSeriesPart}-2}{\TOneEmptyLine}\\\cline{2-2}
         %Line 4: The title of the Identities part
         \Block[c]{1-1}{} & 
         \Block[c]{1-1}{Identities} \\\cline{2-2}
         %Line 5: The first part of the Identities
          \Block[c]{\value{TOneFormulaeAPart}-1}{} &
          \Block[c]{\value{TOneFormulaeAPart}-1}{%
                    \deflength{\MathContentSize}{\ColTwo-1\tabcolsep}%
                    \TOneIdentitiesA{\MathContentSize}} \\
         \AddBlankLines{\value{TOneFormulaeAPart}-2}{\TOneEmptyLine}\\\cline{1-1}
         %Line 6: The last part of the formula
          \Block[c]{\value{TOneFormulaeBPart}-2}{% 
                    \deflength{\MathContentSize}{\ColOne+\ColTwo-1\tabcolsep}%
                    \TOneIdentitiesB{\MathContentSize}%
                    } & \\
         \AddBlankLines{\value{TOneFormulaeBPart}-2}{\TOneEmptyLine}\\\hline
     \end{NiceTabular}
\endgroup