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....RowsAndColumns ' # Grouping Rows & Columns self . group_rows_columns () # Ungrouping...Ungrouping Rows & Columns self . ungroup_rows_columns () def...