Apologies if this comes across as a fundamental question, but searching here and in other places I cannot find any reference to it. Someone developed a calculation - a ration - he said with a script. I cannot see the script anywhere in the field, nor can see where you'd put one. The question is, is it possible to put a 'script' for a calculation for example, in a field and where would it go? Again apologies if this is basic, but I cannot find the answer. Thanks in advance