In addition to various forms that are used for accounting purposes, 1C:Enterprise supports operations with text and spreadsheet documents (reports and user-created spreadsheets). For these types of windows, additional menu items become available.
To view two document parts simultaneously, on the main menu, point to Window and then click Split window horizontally or Split window vertically. These menu items are only available if a text or a spreadsheet document window is active. They split the window into two equal parts. To change the proportion, drag the window separator.
To cancel the split view, on the main menu, point to Windows and then click Remove Window Split, or drag the separator line to any of the editor borders.