title: VBA thisWorkbook usage
body: <p>I have defined a bunch of methods in "thisWorkbook", but I cannot access them as <code>=foo(17.0)</code> from the spreadsheet. Searching on the interwebs suggests that for functions you want to use directly from the spreadsheet, you should create a new <code>Module</code> first. So, this is a two (three?) part question: The first is: how is creating a new module different from putting things in thisWorkbook. The second is: what SHOULD I put in <code>thisWorkbook</code>? The third is: is there any way to access the functions from <code>thisWorkbook</code> (or some specific sheet module from the Excel UI?</p>