Plz any 1 can explain what read form and control from do in alv

plz any 1 can explain what read form and control from do in alv

Hi,
<b>READ_FORM</b> is used to get the form related data like WINDOWS, PAGE WINDOWS, etc
<b>CONTROL_FORM</b>
SAPscript control commands can be carried out with CONTROL_FORM. The
command should be specified without the paragraph format '/:' in the
parameter COMMAND.                                                 
EX..
  CALL FUNCTION 'CONTROL_FORM'
       EXPORTING
            COMMAND   = 'PROTECT'
       EXCEPTIONS
            UNOPENED  = 01
            UNSTARTED = 02.
Thanks,
Naren

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    The first step in understanding any code is to format it so you can easily see what is a sub-query, what the major clauses of each sub-query are, and things like that.
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                );The only thing I have added to the code you posted was whitespace: newlines, tabs and spaces.
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