diff --git a/src/winio.c b/src/winio.c
index 9d6b47e75f65fe330298a7af4f2465757e648d66..54fcdbc85c8470c291c43669ba88046a10593d81 100644
--- a/src/winio.c
+++ b/src/winio.c
@@ -3563,7 +3563,7 @@ void edit_scroll(updown direction, int nlines)
 }
 
 /* Update any lines between old_current and current that need to be
- * updated. */
+ * updated.  Use this if we've moved without changing any text. */
 void edit_redraw(const filestruct *old_current, size_t old_pww)
 {
     bool do_redraw = need_vertical_update(0) ||
@@ -3605,7 +3605,8 @@ void edit_redraw(const filestruct *old_current, size_t old_pww)
 	update_line(openfile->current, openfile->current_x);
 }
 
-/* Refresh the screen without changing the position of lines. */
+/* Refresh the screen without changing the position of lines.  Use this
+ * if we've moved and changed text. */
 void edit_refresh(void)
 {
     const filestruct *foo;