Niltze, b2evolutioners!

Is there a way to adjust the Code: shell width?

I'm in the middle of a post and I need a directive line inside the Code: shell area *not* to wrap down into the next line. For instance if I write within the Code: shell area the following directive:

-l http://mirror.stanford.edu/yum/pub/centos/6/os/x86_64/ \

In my blog the last character (backslash) wraps down and is shown in the next line --which is undesirable.

Thank you in advance for your reply.