Справка LibreOffice 7.5
Displays the entire formula in the maximum size possible so that all elements are included. The formula is reduced or enlarged so that all formula elements can be displayed in the work area. The current zoom factor is displayed on the status bar. A selection of available zoom options is accessible through the context menu. The context menu in the work area also contains zoom commands. The zoom commands and icons are only available in Math documents, not for embedded Math objects.