Menu Element (Visio XML Reference)
Specifies the name of the command that appears on the shortcut menu for a shape or page.
Prefix the command name with an underscore character (_) to display a divider bar above the command in the menu. Prefix the name with a percent character (%) to display the command at the bottom of the shortcut menu.
Optional string. Represents a unit of measure. The default is STR. For details about STR, see Units of measure.
Optional string. Represents the element's formula. This attribute can contain one of the following strings: "someFormula" if the formula exists locally, "No Formula" if the formula is locally deleted or blocked, or "Inh" if the formula is inherited.
If the attribute is not present, the element's formula is a simple constant, for example, <element>5</element>.
Optional string. Indicates that the formula evaluates to an error. The value of Err is the current value (an error message string); the value of the element is the last valid value.
Optional string. Represents the null string condition for a string cell value. In some cases it is helpful to distinguish between an empty string cell null and a null string cell value. This attribute is used to distinguish between these forms of an empty value.