One of the main things former President Corazon Aquino did was the making of the 1987 constitution in place of the freedom constitution which was temporarily used. It had major changes. The country's president should be 40 yrs. old and above and should have the ability to read and write. Also a presidential term lasts for 6 years and if you will become the president, after your term you have to wait 6 years before you could run again.