China DOS Union

Please look at the following batch file:

echo 123&pause>>123.bat

What I want from this line is to generate a 123.bat file whose content is: 123&pause
But in reality what I got was a 123.bat file whose content is: Press any key to continue . . .

How can I keep & from executing? How should this line be modified?

Use the escape character ^

echo 123^&pause>>123.bat

Thanks