Class Libraries & REST APIs for the developers to manipulate & process Files from Word, Excel, PowerPoint, Visio, PDF, CAD & several other categories in Web, Desktop or Mobile apps. Develop & deploy on Windows, Linux, MacOS & Android platforms.... ActiveCell = "A10" ; //Split the worksheet window workbook...Worksheets [ 0 ]. Split (); workbook . Save ( "output-Split.xls" ); NPOI...