Update runtime files.
diff --git a/runtime/doc/index.txt b/runtime/doc/index.txt
index 2406a27..ca52a34 100644
--- a/runtime/doc/index.txt
+++ b/runtime/doc/index.txt
@@ -1,4 +1,4 @@
-*index.txt* For Vim version 8.1. Last change: 2019 Mar 17
+*index.txt* For Vim version 8.1. Last change: 2019 Mar 21
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -1042,10 +1042,11 @@
command-line from history.
|c_CTRL-Q| CTRL-Q same as CTRL-V, unless it's used for terminal
control flow
-|c_CTRL-R| CTRL-R {0-9a-z"%#*:= CTRL-F CTRL-P CTRL-W CTRL-A}
+|c_CTRL-R| CTRL-R {regname}
insert the contents of a register or object
under the cursor as if typed
-|c_CTRL-R_CTRL-R| CTRL-R CTRL-R {0-9a-z"%#*:= CTRL-F CTRL-P CTRL-W CTRL-A}
+|c_CTRL-R_CTRL-R| CTRL-R CTRL-R {regname}
+|c_CTRL-R_CTRL-O| CTRL-R CTRL-O {regname}
insert the contents of a register or object
under the cursor literally
CTRL-S (used for terminal control flow)