--- yatex1.82/docs/yatexe.tex
+++ yatex1.82/docs/yatexe.tex
@@ -382,7 +382,7 @@
 @section Special Filtering Region
   A region like below will be passed to external filter command.
 @example
-%#BEGIN FILTER{foo.pdf}{dot -T %t -o %o}
+%#BEGIN FILTER@{foo.pdf@}@{dot -T %t -o %o@}
 \if0
 ....blah blah blah...
 ....blah blah blah...
--- yatex1.82/docs/yatexj.tex
+++ yatex1.82/docs/yatexj.tex
@@ -488,7 +488,7 @@
 ます。そのためには以下のようなソースを文書中に書きます。
 
 @example
-%#BEGIN FILTER{foo.pdf}{blockdiag -T %t -o %o}
+%#BEGIN FILTER@{foo.pdf@}@{blockdiag -T %t -o %o@}
 \if0
 ---
 ....blah blah blah...