China DOS Union

How do I use a batch file to output <%a="b"%>

Using
echo <%%const a="b"%%>>>c:\a.asp
gives an error.
But if I use echo "<%%const a="b"%%>">>c:\a.asp

it gets output as
"<%%const a="b"%%>"


How can I do it without the outermost double quotes?

　　You must add the escape character ^ before the escape character ^, the concatenation character &, the pipe character |, the input redirection character <, and the output redirection characters > and >>.

Fixed. But I solved it by writing it on separate lines.
If I want to write it on one line, what should I do?
echo ^<%%>>c:\a.asp
echo Const a="b">>c:\a.asp
echo %%^>>>c:\a.asp

Writing it on separate lines like above works. But if I put it all on one line, it doesn't work.

echo ^<%%const a="b"%%^>>>c:\a.asp

Running echo ^<%%const a="b"%%^>>>c:\a.asp
in a batch file outputs <%const a="b"%>
How come it doesn't work?

Did you try what the poster above said?

What system are you running it under?