Add the settabvar() and gettabvar() functions.
Various runtime file updates.
diff --git a/runtime/doc/os_390.txt b/runtime/doc/os_390.txt
index f0c9c44..a0a7155 100644
--- a/runtime/doc/os_390.txt
+++ b/runtime/doc/os_390.txt
@@ -190,7 +190,7 @@
 They still do not work for the menu items themselves (like <Alt-F>O to open
 the file browser).
 
-There is no solution for this as of yet.
+There is no solution for this yet.
 
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 7. Bugs					*OS390-bugs* *zOS-Bugs*