Is it possible to adjust the width of columns on a Page either on the elements (Panel/Button, etc.) or through a ZML snippet?  There are a couple of sample applications that seem to should this where there is a 4 column width grid of items but some of the items have a 2 column width. However I cannot get this functionality to replicate in a custom built page. I would be happy with either a reliable column width change or a column span style change.