Tab.Caption Property (Outlook Forms Script)
Returns or sets a String that specifies the text that appears on the tab. Read/write.
expression A variable that represents a Tab object.
The default caption for an object is a unique name based on the type of object. For example, CommandButton1 is the default caption for the first command button in a form.
If an object's caption is too long, the caption is truncated. If a form's caption is too long for the title bar, the title is displayed with an ellipsis.