how many events are there in REPORT PROGRAMING
explain each and evry thing
<b>INITIALIZATION</b>:-Point before the selection screen is displayed
<b>AT SELECTION-SCREEN</b>:-Point after processing user input on the selection screen while the selection screen is still active
<b>START-OF-SELECTION</b> :-Point after processing the selection screen
<b>GET <table>:-</b>Point at which the logical database offers a line of the database table <table>.
<b>END-OF-SELECTION</b>:-Point after processing all lines offered by the logical database.
<u><b>Events occurring during the processing of the output list of a report.</b></u> TOP-OF-PAGE:- Point during list processing when a new page is started.
<b>END-OF-PAGE</b>:-Point during list processing when a page is ended.Event keywords to write a program for interactive reporting:
<b>AT LINE-SELECTION</b>:- Point at which the user selects a line
<b>AT USER-COMMAND</b> :- Point at which the user presses a function key or enters a command in the command field.
<b>AT PF<nn>:- </b> Point at which the user presses the function key with the function code PF<n>
reward if usefull