Update runtime files.
diff --git a/runtime/doc/usr_04.txt b/runtime/doc/usr_04.txt
index d2dc056..ac629a5 100644
--- a/runtime/doc/usr_04.txt
+++ b/runtime/doc/usr_04.txt
@@ -1,4 +1,4 @@
-*usr_04.txt* For Vim version 8.2. Last change: 2019 Nov 21
+*usr_04.txt* For Vim version 8.2. Last change: 2021 Feb 22
VIM USER MANUAL - by Bram Moolenaar
@@ -464,9 +464,9 @@
You can switch between Insert mode and Replace mode with the <Insert> key.
-When you use <BS> (backspace) to make correction, you will notice that the
-old text is put back. Thus it works like an undo command for the last typed
-character.
+When you use <BS> (backspace) to make a correction, you will notice that the
+old text is put back. Thus it works like an undo command for the previously
+typed character.
==============================================================================
*04.10* Conclusion