With GuiXT you can create pushbuttons for frequently-used menu functions and position them on your screen or in the application toolbar.
The Modification Assistant allows you to create and delete pushbuttons for frequently-used menu functions on your screen or in the application toolbar.
Even though these changes are technically modifications, they can be adopted automatically at upgrade. This is the case unless the SAP standard contains a new function code with the same name in the new release (which is highly unlikely). Further information can be found in the sectionModifications in the Menu Painter.