What is the difference between start_form and open_form in scripts? Why is it necessary to close a form always once it is opened?

SAP Reports,SAP DB,ALE, SAP Tables questions and answers

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What is the difference between start_form and open_form in scripts? Why is it necessary to close a form always once it is opened?

Answer1:
strat_form using this we can open many layoutses
open_form using this we can open the layout
performance will be high

Answer2:
Open_form -- is used to initialize the spool request.
Start_form-- is used to initialize the layout.

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