Writing ShapeSheet Formulas
ShapeSheet cells can contain either a value or a formula, and you can alternate the view to show one or the other. A formula is the expression in a cell that evaluates to a value. Visio 2007 adds some default formulas to shapes; a shape inherits other formulas from a master shape. And then there are the formulas that you can create by typing in a ShapeSheet cell or on the formula bar, as Figure 25-3 shows. A formula always starts with an equal sign (=), which Visio 2007 inserts automatically.
Figure 25-3. When you select a cell, its formula is shown on the formula bar. You can type directly in cells or use the formula bar to enter and edit formulas.
When you edit a cell’s formula, you change the way that Visio ...