diff --git a/yatex.el b/yatex.el
index 62f896b..382ec4e 100644
--- a/yatex.el
+++ b/yatex.el
@@ -1,6 +1,6 @@
 ;;; yatex.el --- Yet Another tex-mode for emacs //�쒹// -*- coding: sjis -*-
 ;;; (c)1991-2019 by HIROSE Yuuji.[yuuji@yatex.org]
-;;; Last modified Sat May 25 14:46:49 2019 on firestorm
+;;; Last modified Thu Oct 17 09:51:11 2019 on firestorm
 ;;; $Id$
 ;;; The latest version of this software is always available at;
 ;;; https://www.yatex.org/
@@ -16,7 +16,7 @@
 
 ;;; Code:
 (require 'yatexlib)
-(defconst YaTeX-revision-number "1.81.4"
+(defconst YaTeX-revision-number "1.81.5"
   "Revision number of running yatex.el")
 
 ;---------- Local variables ----------
@@ -452,6 +452,7 @@
    '(("maketitle") ("makeindex") ("sloppy") ("protect") ("par") ("and")
      ("LaTeX") ("TeX") ("item") ("item[]") ("appendix") ("hline") ("kill")
      ;;("rightarrow") ("Rightarrow") ("leftarrow") ("Leftarrow")
+     ("onecolumn") ("twocolumn")
      ("pagebreak") ("nopagebreak") ("tableofcontents")
      ("newpage") ("clearpage") ("cleardoublepage")
      ("footnotemark") ("verb") ("verb*")
diff --git a/yatexadd.el b/yatexadd.el
index a8dfb97..b2378c0 100644
--- a/yatexadd.el
+++ b/yatexadd.el
@@ -1,6 +1,6 @@
 ;;; yatexadd.el --- YaTeX add-in functions -*- coding: sjis -*-
 ;;; (c)1991-2019 by HIROSE Yuuji.[yuuji@yatex.org]
-;;; Last modified Sat May 25 14:46:41 2019 on firestorm
+;;; Last modified Thu Oct 17 09:44:48 2019 on firestorm
 ;;; $Id$
 
 ;;; Code:
@@ -2373,6 +2373,10 @@
    (t nil)))
 (fset 'YaTeX:it 'YaTeX:em)
 
+;;; twocolumn
+(defun YaTeX:twocolumn ()
+  (format "[%s]" (YaTeX-read-string-or-skip "One column paragraph: ")))
+
 ;;; -------------------- End of yatexadd --------------------
 (provide 'yatexadd)
 ; Local variables: