Thanks for your great column and any help you may suggest. I think this is unnecessary, or at least until you get to a certain level and your agent or manager suggests it. If you are more proud of your film work, list it before theatre, and vice versa. In a cold reading, you are usually presented with a section of a script called a side. Sometimes you barely finish glancing at the side before they call you to read it in the audition.
Some actors like to ask if they can have more time to sit with the script and make some choices.
Others just go for it. This is a great challenge that requires the ability to rely on your instincts and impulses. If you really trust yourself, reading a script you barely know can be an exhilarating experience. Many people freak out and get scared. One of the keys to a successful cold audition is to forget about right and wrong.