Update runtime files
diff --git a/runtime/doc/index.txt b/runtime/doc/index.txt
index 315a5f3..78d557f 100644
--- a/runtime/doc/index.txt
+++ b/runtime/doc/index.txt
@@ -1,4 +1,4 @@
-*index.txt* For Vim version 8.2. Last change: 2020 Apr 26
+*index.txt* For Vim version 8.2. Last change: 2020 May 10
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -364,8 +364,8 @@
register x]
|Y| ["x]Y yank N lines [into register x]; synonym for
"yy"
-|ZZ| ZZ store current file if modified, and exit
-|ZQ| ZQ exit current file always
+|ZZ| ZZ write if buffer changed and close window
+|ZQ| ZQ close window without writing
|[| [{char} square bracket command (see |[| below)
\ not used
|]| ]{char} square bracket command (see |]| below)
@@ -1721,7 +1721,7 @@
|:wqall| :wqa[ll] write all changed buffers and quit Vim
|:wundo| :wu[ndo] write undo information to a file
|:wviminfo| :wv[iminfo] write to viminfo file
-|:xit| :x[it] write if buffer changed and quit window or Vim
+|:xit| :x[it] write if buffer changed and close window
|:xall| :xa[ll] same as ":wqall"
|:xmapclear| :xmapc[lear] remove all mappings for Visual mode
|:xmap| :xm[ap] like ":map" but for Visual mode