Revert "back button + proofread bug"

This reverts commit 968bacb6dd377be00374074bc6e5880cb7142c87.
Revert "Revert "Revert "trying to add back button"""

This reverts commit 5c33d983fa0ed8eebb2e7c5645fe2b14c62a6c74.
Revert "Revert "trying to add back button""

This reverts commit 65d32502b76e98a4bb40b0e3787ad7494d17589c.
Revert "trying to add back button"

This reverts commit 62572acef36b45b3edee1d23fbb64588cd643654.
fix proofread bug