diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index a0130cf..55f9998 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -431,6 +431,10 @@
     <string name="settings_time_format_24h">24-hour (14:00)</string>
     <!-- %1$s is a sample time written the way the system currently writes it. -->
     <string name="settings_time_format_auto_summary">Following the system: %1$s</string>
+    <!-- Reworded in v2.20 (#113): this setting no longer draws a separator line
+         at each hour, it seats each hour in its own cell. The key is kept, so any
+         translation of the old wording ("Hour lines" / "show a separator line at
+         each hour") describes a feature that no longer exists and needs redoing. -->
     <string name="settings_hour_lines">Hour grid</string>
     <string name="settings_hour_lines_summary">Seat each hour in its own cell in week and day view</string>
     <string name="settings_timeline_scale">Hour height</string>