+\S{faq-screen}{Question} Since I upgraded to PuTTY 0.54, the
+scrollback has stopped working when I run \c{screen}.
+
+PuTTY's terminal emulator has always had the policy that when the
+\q{alternate screen} is in use, nothing is added to the scrollback.
+This is because the usual sorts of programs which use the alternate
+screen are things like text editors, which tend to scroll back and
+forth in the same document a lot; so (a) they would fill up the
+scrollback with a large amount of unhelpfully disordered text, and
+(b) they contain their \e{own} method for the user to scroll back to
+the bit they were interested in. We have generally found this policy
+to do the Right Thing in almost all situations.
+
+Unfortunately, \c{screen} is one exception: it uses the alternate
+screen, but it's still usually helpful to have PuTTY's scrollback
+continue working. The simplest solution is to go to the Features
+control panel and tick \q{Disable switching to alternate terminal
+screen}. (See \k{config-features-altscreen} for more details.)
+
+The reason why this only started to be a problem in 0.54 is because
+\c{screen} typically uses an unusual control sequence to switch to
+the alternate screen, and previous versions of PuTTY did not support
+this sequence.
+