-If this variable is non-@code{nil}, matching score entries will have
-their dates updated. (This is how Gnus controls expiry---all
-non-matching entries will become too old while matching entries will
-stay fresh and young.) However, if you set this variable to @code{nil},
-even matching entries will grow old and will have to face that oh-so
-grim reaper.
+If this variable is non-@code{nil}, temporary score entries that have
+been triggered (matched) will have their dates updated. (This is how Gnus
+controls expiry---all non-matched-entries will become too old while
+matched entries will stay fresh and young.) However, if you set this
+variable to @code{nil}, even matched entries will grow old and will
+have to face that oh-so grim reaper.