Facbook Will Past Facbook Posts Be Invisible If I Change My Privacy Settings?

Will past Facbook posts be invisible if i change my privacy settings? - facbook

Hi, this is a question of Facebook. If you publish an article on the walls of people, and then change the privacy settings, these positions on the walls of my friends from the eyes, for those not on my friends list? Are there hidden a comment, but comment is? Or the message will remain visible, but we can not and do not click on a photo?

Thank you.