Format element specifies the formatting of a custom property that is a string, fixed list, number, variable list, date or time, duration, or currency. The custom property type is specified in the corresponding Type element.
Prompt element specifies descriptive or instructional text that appears to users in the Custom Properties dialog box when the property is selected. This text also appears as a tool tip when the mouse pointer is paused over the property in the Custom Properties window.
Specifies whether the user is queried to enter custom property information for a shape when an instance is created or the shape is duplicated or copied.