setup.sh: Minor documentation update.

diff --git a/setup.sh b/setup.sh
index aa323acd2be93d457c4ca26b8fd921fe11d64394..7f5ab282cf9865d8f70543e36810e43b8c31e353 100755 (executable)
--- a/setup.sh
+++ b/setup.sh
@@ -88,8 +88,9 @@ if test "`id -u`" -ne 0; then
     grep -v '(ROOT)' screenrc > screenrc.tmp
     mv screenrc.tmp screenrc
 fi
-# I use some features of screen which are only in Git. Drop them on machines
-# which have older versions. They are marked as "(GIT)".
+# I use some features of GNU screen which are only in Git or very recent GNU
+# screen versions. Drop them on machines which have older versions. They are
+# marked as "(GIT)".
 if test -d "$HOME/development/shell/screen"; then
     echo screenrc: removing Git features
     grep -v '(GIT)' screenrc > screenrc.tmp