Many program settings are specified in the Preferences dialog box, including settings for File Associations, Forms, Full Screen, General, History, JavaScript, Languages, OCR, Page Display, PDF/A, Reading, AIP Setting, Security, Signature, and Trust Manager. Once you set preferences, they remain in effect until you change them.
Choose File > Preferences. (Tip: In the Preferences window, input keywords in the Search box to find a preference option.)
Select the type of preference you want to change under the list of categories.