Add the settabvar() and gettabvar() functions.
Various runtime file updates.
diff --git a/runtime/doc/usr_04.txt b/runtime/doc/usr_04.txt
index b3ba894..6846728 100644
--- a/runtime/doc/usr_04.txt
+++ b/runtime/doc/usr_04.txt
@@ -498,7 +498,7 @@
~ change case of the character under the cursor, and move the
cursor to the next character. This is not an operator (unless
'tildeop' is set), thus you can't use it with a motion
- command. It does works in Visual mode and changes case for
+ command. It does work in Visual mode and changes case for
all the selected text then.
I Start Insert mode after moving the cursor to the first