Functions, Interactions, and
Events 
As well as using ALV outputs to depict table-type data structures clearly for users, you can also allow users to interact with the ALV output in various ways. You can provide the following options:
In the Settings dialog box or toolbar, you can show or hide the different UI elements with which the user can access the ALV output services.
ALV supports the selection of standard functions: If, for example, your ALV output does not contain any columns with values that can be calculated, the UI elements for calculation are not displayed in the columns.
· Self-defined, application-specific functions
You generate UI elements in the toolbar with which the user can run the functions you programmed yourself, and thus use your application effectively.
· Interactive UI elements within the ALV output table
You can use interactive UI elements in the ALV output table (for example, as cell editors in the columns and rows of your ALV output). There are two types of interaction:
¡ Interaction without changing data (see Handling Interaction with no Data Changes)
¡ Interaction with data changes (see Handling Interaction in Editable ALV)
Various events are available to handle the user’s actions regarding these UI elements.