Taken from the help file with the vipec software.
The number and spacing of the cells in the Table is completely user adjustable. Rows/columns may be inserted or removed where desired by right clicking in the desired place on the labels of the RPM Axis or Load Axis (ie right click on the RPM values to insert a new RPM column). This flexibility allows fine spacing in areas where high resolution/accuracy is required and coarse spacing in less critical areas. The maximum number of RPM columns is 22, while the maximum number of Load rows is 20. When adding a new row or column, the new row/columns cell values will be interpolated between the values in the rows/columns which it was inserted between.