Update runtime files
diff --git a/runtime/doc/insert.txt b/runtime/doc/insert.txt
index b376af7..51cfa46 100644
--- a/runtime/doc/insert.txt
+++ b/runtime/doc/insert.txt
@@ -388,10 +388,10 @@
CTRL-O execute one command, return to Insert mode *i_CTRL-O*
CTRL-\ CTRL-O like CTRL-O but don't move the cursor *i_CTRL-\_CTRL-O*
CTRL-L when 'insertmode' is set: go to Normal mode *i_CTRL-L*
-CTRL-G u break undo sequence, start new change *i_CTRL-G_u*
-CTRL-G U don't break undo with next left/right cursor *i_CTRL-G_U*
- movement, if the cursor stays within the
- same line
+CTRL-G u close undo sequence, start new change *i_CTRL-G_u*
+CTRL-G U don't start a new undo block with the next *i_CTRL-G_U*
+ left/right cursor movement, if the cursor
+ stays within the same line
-----------------------------------------------------------------------
Note: If the cursor keys take you out of Insert mode, check the 'noesckeys'
@@ -428,8 +428,8 @@
:inoremap <CR> <C-]><C-G>u<CR>
-This breaks undo at each line break. It also expands abbreviations before
-this.
+This starts a new undo block at each line break. It also expands
+abbreviations before this.
An example for using CTRL-G U: >
@@ -443,9 +443,9 @@
inoremap <expr> <End> repeat('<C-G>U<Right>', col('$') - col('.'))
inoremap ( ()<C-G>U<Left>
-This makes it possible to use the cursor keys in Insert mode, without breaking
-the undo sequence and therefore using |.| (redo) will work as expected.
-Also entering a text like (with the "(" mapping from above):
+This makes it possible to use the cursor keys in Insert mode, without starting
+a new undo block and therefore using |.| (redo) will work as expected. Also
+entering a text like (with the "(" mapping from above):
Lorem ipsum (dolor